Bacon Bits
Hero
Toughness is somewhat weak, but it does allow you to break 20 Con, and +3 hp/level would be nuts at high level. If I were to make a change, I'd probably combine Toughness with the non-ASI half of Durable. They're both slightly weak feats by themselves. As printed I've only ever considered Toughness at high level after I've maxed Con and Str as a Fighter. And I ended up taking Sentinel and Mobile over it.
Healer is a bit weak. It could easily grant proficiency with the Healer's Kit and Herbalism Kit. I feel like these "Profession" style feats should be a complete thing, although I guess that's what Backgrounds are for. Given the power of long rest healing, it's a bit difficult to make non-combat healing overpowered.
Inspiring Leader is mostly fine, although I could see it having some benefit for NPC interactions. It would be more meaningful if you might interact with NPC companions more often or if it didn't feel subsumed by heroes' feast at higher levels. The limit of six seems pretty arbitrary, but there's nothing stopping you from affecting 12 creatures in 20 minutes, either.
Healer is a bit weak. It could easily grant proficiency with the Healer's Kit and Herbalism Kit. I feel like these "Profession" style feats should be a complete thing, although I guess that's what Backgrounds are for. Given the power of long rest healing, it's a bit difficult to make non-combat healing overpowered.
Inspiring Leader is mostly fine, although I could see it having some benefit for NPC interactions. It would be more meaningful if you might interact with NPC companions more often or if it didn't feel subsumed by heroes' feast at higher levels. The limit of six seems pretty arbitrary, but there's nothing stopping you from affecting 12 creatures in 20 minutes, either.