I agree that there are a number of not-great feats that would give great flavour to a character’s back story but that a player would find it almost impossible to justify picking over more powerful ones in the early game, or even at all.
I quite like this idea of being able to pick from a list of non-ASI feats at character creation, though can see it might be challenging to pick the exact list of underpowered feats that were suitable for this purpose but wouldn’t break balance.