I just use the “Just perfection” extension to hide to top bar and only make it visible in overview. It may sound annoying to have to use overwiew each time you want to see or interact with the top bar, but honestly for me it’s not that often to make that 1 or 2 extra keypresses annoying. When you get used to it it saves a lot of space.

I don’t think the new changes will mean that all sideloaded apps are banned. We don’t yet know how much Google will misuse this to make installing apps that they don’t find “appropriate” even though they are completely safe a burden. The verification will probably be fully automated. Can anyone clear this out?

Are you sure Linux doesn’t support shared GPU memory? I mean if you had an integrated GPU with no strictly reserved memory which is fairly common on cheaper notebooks the GPU has to share the memory with rest of the system. There’s no other way for it to even function.