Hi!
I just wanted to comment my appreciation of the feats that both classes get that give them optional proficiency in certain weapons. For refrence, this is the Reaper's and Smith's weapon familiarty feats.
The broad strokes of the feats are perfect. I've long lamented the number of advanced weapons in the game that are functionally fighter features as if it's not ancestry-tied, you can't use it to its full potential. This is a great way to address that, and I hope we see other classes get similar feats. For example, giving alchemists access to all injection weapons, or magus familiarity with weapons appropriate to their hybrid study.
The main issue as I see is that there aren't actually that many advanced weapons in the groups runesmith gets access to, but there may well be some on the way in Battlecry!
(I also think that necro not going to master does put the limits on a melee-necro playstyle, but I don't know if giving the feat even alchemist scaling would be too much.)