5e was designed to make D&D an entry level rpg again, just like it used to be with the Red box Basic. That is why D&D is so popular these days. The bonus is that, unlike many entry level games, it also offers customization options in the DMG to tune the game between semi-gritty to super heroic fantasy. That is very generous.
If you want a super detailed combat systems with loads of feats, à la 3e or 4e and such, 5e will never be that game. The system was not build with that intention to begin with. You are barking up the wrong tree. There is no cat hiding in the branches.