But closer to the topic, I think a lot of those things ("Drawing takes an action", etc) are key to the system and forcing the players to make choices, as well as making things simpler on the GM (No need to hash whether something is a Full Action or a Bonus Action, etc, since you can just say most things are "One Action" unless it's truly a free one) and also means that you have to think a bit more. For example, drawing a potion is one action and using it is another. Now you can still attack once in there, but it also means you lose your move. To me, I like those decisions and risks, but it might not be for others. But that sort of thing, where you have a lot of options but they all have cost is a big part of what makes PF2 interesting and different.
Of course, if you want to simplify it a bit, you can give sort of "Quick-Draw" feats that fit a class along with a sort of "Kit of Feats" like I suggested before. So a Duelist might get "Quick-Draw" while a Sword & Board might get "Reactive Shield" as part of the package. You'd be taking away some of the customizability, but you could easily put together some solid archetypes in that way with all the classes.