Eldarain wrote:Is it even possible to play a Grand Alliance army in matched play now?
They had already been removed from matched during 2nd, but as of 3rd it is no longer possible to do a Grand Alliance allegiance at all; only the individual army allegiances exist now.
As for bonuses, I don't think they would particularly need any. The advantage of being able to mix & match options from the entire alliance is significant, and such an army would still have access to command traits, artifacts, spells, prayers, and triumphs via core enhancements.