Honestly, 75 feats in a core game sounds terrible to me. Session 0 slog and more charop-minigame shenanigans.
5e curtailed the excesses of 3e by having a tighter core base and the excellent rule of core+1 rulebook.
I was hoping for less feats better designed.
you can certainly have less feat better desing, but 75 feats is not that much IMHO.
you could merge Shadow touched and Fey touched and streamline it to:
Spell touched:
+1 ASI
learn one 1st level spell and one 2nd level spell
gain one 1st and 2nd level spell slot.
you can take this feat up to two times. Or 3? Or any number?
Skilled, skill expert, various armor proficiencies can be merged into one feat:
Additional training:
gain 6 benefits from the list:
skill proficiency(can be taken any number of times)
skill expertise(can be taken 2 times)
Tool proficiency in 3 tools
3 Languages
martial weapons(costs 2 benefits)
cantrip(can be taken 3 times)
shield proficiency
Light armor proficiency
Medium armor(requires light armor)
heavy armor(requires medium armor)
Saving throw(dex, con or wis) costs 2 benefits
Saving throw(str, int or cha) costs 1 benefit. This might go to 2 also, depending on 2024 saving throws spread across 6 abilities.
+1 ASI(costs 3 benefits), if you really only want a Half-feat