I'd rather bring full Columi guys rather than full Battlemaster regardless of stats for the simple reason that the Columi guy is experienced in PVE. The guy in full Battlemaster may have no idea how to clear endgame trash or how the boss fights work. Bioware made it clear in Denova that you have to have experience with raiding and knowledge of the boss fights to clear that content and most likely future content as well.
I don't understand this at all. 100% of my alts post-1.2 came into their first operations in recruit or battlemaster. That doesn't mean I'm inexperienced at PvE content.