There has to be something done about the ranking involved when AI takes over for either players leaving or the entire match is human vs AI. These games seem like free favor and Pantheon ranking, and the doom of poor unfortunates who get screwed by the matchmaking.
I have seen games while connecting, a player drops from 4 down to 3 and the game just immediately begins as a 2v1.
Online the favor items should be bound directly to the demigod you purchased it with for that entire Tournament. A different system would need to be incorporated into the skirmish and custom modes.
This way a Player can keep and use the items on Pantheon that they earned because most people end up using a single demigod more than others. This would increase competitiveness to win while at the same time give people the satisfaction of knowing that spending their hard earned favor points would yield some long term boon to their side of the tournament.