My suggestion is that all the players in the DM room should be combined when doing the fight now, but you're only competing against the people in your room. This would mean less waiting time between matches as well as more of a variety of decks. Not sure if it has been said already or not.
It,s just that when I DM I find Ambre over used,and I,m the kind of player that likes to beat common tactics.Maybe one day the kind of DM room I dream of will exist.While it does contain a leader this is a deck I had success with over Ambre during the Sentinel Ld missions. Cop/Chop