So once scum catches up to the Rebels and Imperials... will waves have only 3 ships?
Scum is awfully close to having the same number of ship-types as the Imperials. (I'm going based off of known ship types, from the yet another squad builder page). They are 1 behind the Imps and 2 Behind the Rebels, but Rebels will probably ALWAYS have 1 more due to the Ghost/Phantom expac being 2 ships.
So if the next wave announced follows the same pattern of 2 scum, 1 Reb, 1 Imp, then we'll be all caught up. What then? Scum Aces? Scum Huge ships? Waves of 6? (2 each)?