Instead of losing the basics of usability I whish firefox would embrace new directions that have been shown by arc browser or at least allow the level of custom

Instead of losing the basics of usability I whish firefox would embrace new directions that have been shown by arc browser or at least allow the level of customiziation it used to. I made a prototype but the step to fork just to modify the ui seems ridiculous. https://www.youtube.com/watch?v=IxE8CD4dylQ https://www.youtube.com/watch?v=IxE8CD4dylQ