Its like OWLCAT offers something that includes nearly EVERYTHING for the RPG fan and people still complain that its too much make it simpler LOL. Im like NO NO add MORE!!!
Sure nice to have focus/specialization feats for weapons that are either barely present (like slings) or don't exist at all (like whips). There's little point in having hundreds of options if many of them either don't work or are so suboptimal on any difficulty higher than "normal" (not even the "challenging" one which is "true" to the core rules!) that you're better off not using them at all rather than suffer through it. That's not good balance, that's a jumbled mess which is thrown together without thought of how it translates into the game from the ruleset and whether or not the game is designed to accomodate it. Who'd in their right mind pick most of the divine domains that are on offer, for example? Would you rather, um, throw your weapon at the enemy several times between rests using your spellcasting ability to hit... or have stronger healing spells, be better at dealing with undead/outsiders, have a quick and cheap way to remove fatigue from the party?
I'm all for lots of options in an RPG, myself. But there's a difference between a carefully prepared multi-course meal and a pile of uncooked food as tall as the room it's in you are expected to dive into.