Plus, I'm fairly certain they are trying to get rid of remembering "fiddly bits" and creating "builds". Small feats tend to encourage people to mix and match feats to create extremely niche characters with powerful mixes of abilities. For new players especially this can be daunting. Heck, I'm a rules lawyer who spends his time reading D&D message boards and the idea of picking feats in both 4e and 3.5e gives me nightmares. So many feats...so many combinations....have to read them all to make sure I'm not missing one that would fit my build better. I really like the major themed feats from 5e because it allows me to look at the feats and say "Do I want to be offensive or defensive? I'll take the offensive feat. That makes me good at two handed weapons and at doing damage." Which is much easier to remember and deal with than "Alright, I have this feat that gives me +5 damage against prone targets. This feat that knocks people prone when I do 15+ damage in a single hit and this feat that gives me +5 to save against fire spells."