I hope they replace the AOSP keyboard with FUTO keyboard. I'm mostly fine with the other stock apps, but that keyboard was the one thing I absolutely had to end up replacing due to its jenky behavior.
Heliboard is good, customizable, and actually open source - GPL3.
I use Gboard with the network permission disabled. It works well but I hope they have a better stock keyboard, I haven't found any others that don't annoy me in one way or another.
I wish Futo had the ability to use a typing heat map for more accurate predictions like SwiftKey. It constantly suggests "AMD" when I am trying to type "and". I have fat thumbs OK! I don't even have the caps on and I RARELY talk about AMD. It's just the one thing I miss. I do find the predictions generally less accurate as well, but perfectly usable.
They cannot. The license FUTO uses is not open source and is incompatible with being bundled with GrapheneOS.
Probably never happening in the next millennium. GrapheneOS has a gripe against FUTO because it is tied to Louis Rossmann, which dared to challenge GrapheneOS's social skills in the past.
I agree FUTO is the best right now but it's not open source so they won't.