Hi Jaime Millan Conejero,

Based On my experience if you Customise your Odoo UX and UI.

https://apps.odoo.com/apps/themes?price=Free

So Please refer this App store open source Module and and based on Create your own.

So you know about How  Odoo uses the QWeb templating engine, which has its own syntax and limitations. Understanding and working within the constraints of QWeb is essential.

Custom widgets can be created, but their complexity and interaction with existing Odoo components can be difficult to manage and debug.

Customizations may not be compatible with future Odoo releases, requiring significant effort to upgrade and maintain.

Managing dependencies between custom modules and Odoo’s core modules can be challenging, especially during upgrades.

Extensive use of custom JavaScript and CSS can impact the performance of the Odoo interface, leading to slower load times and reduced responsiveness.

Customizations need to ensure that the UI remains responsive and usable on different devices, including mobile phones and tablets.

The default Odoo framework is designed to be responsive, but custom elements might not automatically inherit these properties.

By understanding and planning for these technical limitations, you can effectively redesign Odoo's UX and UI while maintaining system stability and performance.

Thanks.