I will put my comments:
Longshot: should be blue. Now it was nerfed to 12.5m, it is really less interesting.
Charismatic: someone take this??
One motion: it should be in brown. This is a tax node except if you use a helbore or a boltgun.
Out of blood: should be in green. This is one of the best toughness regen talent (with confirmed kill)
Tactical reload: Not everybody play auric histg. Volley adapt is great in auric histg, and not good out of it. Tactical reload is good at any difficulty level and mandatory for a shotgun. Perso, I prefer 100 times this talent than Volley adapt.
Serrated blade: is a good talent for horde clear. It is also a real good talent is you use a combat blade with mercy killer
Catch a breath: is a a sort of Loner for a veteran. I agree this is a useless talent.
Grenade Tinkerer: is a good talent with a grenadier build. It is or a good monstrosities killer (krak grenades) or a serious improvement for frag grenades. I would definitively not put it with same color than Covering fire (that is totally unwanted on 90% of the builds)
Executionner stance and Infiltrate: In my opinion both should have same color. Only VoC should be in bright green. Exec has been buffed, and stealth is not really the true great ability. In term of utility, exec stance is even better.
Field improvisation: why in green??? at least put it in blue. This talent is the worst on veteran until they fix the corruption cleanser. With a grimoire in team, you deplete the medikit pretty fast. Seen it again yesterday.
Keep their heads down: must admit I prefer this than “for the emperor!”. +50% suppression can change things on autoguns.
Movement speed boost: you have put one in bright green the other in blue???
Low profile: in brown… worst talent on the veteran tree.
Leave no one behind: surely totally useless on auric with good players. But at lower difficulties, or when you meet a bad player… this is a talent that can save the run, especially if you put one or several “revive ally” bonus on curios.
Hunter’s resolve: I admit it can be a good talent (that I never picked) but I would surely not put it in bright green. At least in dark green.
About auras: I am not sure I would say that all are equals in term of utility. Survivalist is surely really good, close and kill I must admit that it is my preferred. But Fire team?
In my opinion, only focus target! is a good keystone. Weapons specialists is absolutely garbage. But yes… this is personal opinion.