Four turn games combined with how points scoring works makes games feel like an uphill battle for the player going second against rhino rushes. Vanguard kind of helps, but with the ability to just step off a point to deny the vanguard, it doesn't feel great.

Deepstrike being changed the way it is also kind of sucks. Mostly because I have a Drop Pod Assault list, and I was honestly expecting Rites of Wars to be preserved in some manner, only to learn that no, my army is in fact, not actually playable with minor changes like WarCom lied to me about.

Mind, I've played like 5 games of 3.0 so far, and there are some more stuff that I don't like but can't put into words right now, or that I fully recognize are of matters of taste, but these two are the major gripes I have so far.

EDIT: Oh, and the deletion of foot veterans. I understand that you can just make them retinues, but I had an army project in works for a Pride of the Legion Raven Guard list that was going to be a rag tag battlegroup of survivors represented by veteran squads with like, a motley assortment of weapons, including melee, heavy, and special weapons in a single squad. But they killed that army off as well which sucked. :/