Update README.md

Signed-off-by: Damien Jeandemange <[email protected]>

README.md

@@ -9,33 +9,65 @@
 
 ## Overview
 
-YAGAT provides a graphical user interface built on top of the [PowSyBl](https://www.powsybl.org) open source grid analysis libraries.
+YAGAT provides a graphical user interface built on top of the fantastic [PowSyBl](https://www.powsybl.org) open source
+grid analysis libraries.
 
 With YAGAT, no programming skills are required: just download, unzip, and run – you're all set!
 
 Today with YAGAT you can:
+
 - Load grid models from the various formats supported by [PowSyBl](https://www.powsybl.org):
-  - PowSyBl native iIDM format
-  - CIM/CGMES
-  - UCTE-DEF
-  - IEEE-CDF
-  - MATPOWER
-  - Siemens PSS®E
-- Display and navigate the grid model with electrical buses represented in tabular form
+    - PowSyBl native iIDM format
+    - CIM/CGMES
+    - UCTE-DEF
+    - IEEE-CDF
+    - MATPOWER
+    - Siemens PSS®E
+- Display and navigate the grid model:
+    - with electrical buses represented in tabular form
+    - with per-equipment lists
+- Modify generator, load, etc. active power
 - Run a Load Flow, visualize solved bus voltages and branch flows
 
+### Rationale
+
+YAGAT was created to address key limitations found in existing open-source grid analysis tools, making it more
+accessible for users without programming expertise or advanced technical setups. Here's why YAGAT stands out:
+
+1. **Graphical User Interfaces (GUIs):**  
+   Many existing grid analysis tools are command-line-based or require custom scripting. This can be intimidating for
+   users unfamiliar with programming. YAGAT fills this gap by offering a user-friendly GUI, allowing users to interact
+   with grid models visually and intuitively, without writing a single line of code.
+
+2. **Technical Barriers:**  
+   Some tools require extensive programming knowledge or familiarity with complex APIs to perform basic operations like
+   running load flow calculations or modifying grid parameters. YAGAT eliminates this barrier, enabling users to perform
+   these tasks with just a few clicks.
+
+3. **Complicated Installation Processes:**  
+   Installations for many tools often involve dependency management, environment setup, or specific system
+   requirements, making it difficult for non-technical users. YAGAT simplifies this process with pre-packaged binaries
+   for Windows, Linux, and macOS. Installation is as simple as downloading, unzipping, and running the application.
+
+By addressing these pain points, YAGAT empowers engineers, analysts, and researchers to focus on their work rather than
+wrestling with software setup or programming challenges. It democratizes grid analysis, making it accessible to a
+broader audience with diverse technical backgrounds.
+
 ## Installation
 
-Binary releases are provided for Windows, Linux and macOS on the [releases page](https://github.com/jeandemanged/yagat/releases).  
+Binary releases are provided for Windows, Linux and macOS on
+the [releases page](https://github.com/jeandemanged/yagat/releases).  
 No additional software is required for installation.  
 Download and extract the zip archive for your platform, then run YAGAT.
 
+Note that YAGAT's author does not own a Mac, please report any issue found running YAGAT on macOS.
+
 ## Quick Start
 
 - **Open a sample network**: Go to `File` | `Open Sample network` | `IEEE 9 Bus` to load a sample grid model.
 - **Navigate the grid**: Use the tree view on the left to browse through the network model and its elements.
 - **Run the Load Flow**: Select `Run` | `Load Flow` to execute the analysis.
-  - Once completed, review the solved bus voltages and branch flows.
+    - Once completed, review the solved bus voltages and branch flows.
 
 ![yagat quickstart](https://github.com/user-attachments/assets/a5ef2a20-13a8-44f5-b927-8d090d173d73)
 
@@ -50,7 +82,7 @@ cd yagat
 ```
 
 ```bash
-# install requirements
+# create a virtual environment and install requirements
 python -m venv venv
 . venv/bin/activate
 pip install -r requirements.txt
@@ -68,32 +100,45 @@ YAGAT is then available for your platform in the `dist` directory.
 YAGAT today lacks many features, but you may already find it useful. What is planned for the future is:
 
 ### Short-Term to Mid-Term Plans:
-- **General**: A log view
-- **Grid Model Navigation**: Tabular views per equipment type
-- **Grid Model Updates**: Adjust grid configurations, such as opening/closing switches, changing generator set points, etc.
+
+- **Grid Import**:
+    - modify format-specific import options
+- **Grid Export**:
+    - modify format-specific export options
+- **Grid views**:
+    - overall cleanup
+    - add tables for grid element parameters (e.g. lines R, X, etc.) display and update
+    - add navigation between the different views
+- **Grid Topology Updates**:
+    - modify switches open/close status, modify equipment connected status
 - **Load Flow**:
-  - Add ability to save/load the Load Flow parameters
-  - View Load Flow reports in order to troubleshoot e.g. non-convergence
+    - Add ability to save/load the Load Flow parameters
+- **Reports**:
+    - View Grid import and Load Flow reports in order to troubleshoot e.g. non-convergence
 
 ### Future Plans:
+
 - **Security Analysis**:
-  - Configure a list of contingencies to simulate
-  - Run contingency analysis
-  - View contingency violations
+    - Configure a list of contingencies to simulate
+    - Run contingency analysis
+    - View contingency violations
 
 ## Under the Hood
 
 YAGAT is:
+
 - **Written in Python**: a high-level, general-purpose programming language.
-- **Using [PyPowSyBl](https://pypowsybl.readthedocs.io/en/latest/index.html)**: Provides the core grid analysis functionalities.
+- **Using [PyPowSyBl](https://pypowsybl.readthedocs.io/en/latest/index.html)**: Provides the core grid analysis
+  functionalities.
 - **Using [Tkinter](https://wiki.python.org/moin/TkInter)**: Supplies the graphical user interface.
 - **Using [Tksheet](https://github.com/ragardner/tksheet)**: An amazing tkinter table widget.
 - **Using [PyInstaller](https://pyinstaller.org/en/stable/)**: Packages the application.
 
 ## Data Confidentiality
 
 We take data confidentiality seriously.
-All data processed by the application remains on the user's local machine and is not transmitted to any external servers.
+All data processed by the application remains on the user's local machine and is not transmitted to any external
+servers.
 This ensures complete data privacy for users working with sensitive grid models.
 
 ## Contributing and Support