Bad timing to switch to war atm. Let's just say that this class got absolutely nuked by a recent update, and it would be suggested that you stay rogue for endgame purposes. Trying war ain't bad though, just remember it won't be fun running war for endgame rn. So, now, skills are situational, but tbh the only ones you would need are the skyward smash, windmill, chest splitter, horn of renew, and juggernaut. Other skills such as vengeful blood or warcry are useless. Only dozer axe and chasmal armor would be recommended for wars right now, and even then, they won't be that helpful in the whole perspective of dominating endgame. So, sorry to get your hopes down, but maybe after a few months being a warrior would actually mean something good and useful (hopefully).