I'll play the game, even if they cant add more main characters or the main crew would be too crowded. But they could make more episodes with "guess stars" like they did with Wheeljack. But most importantly, if we can have the toys that go with it...
Anyway, here's my top 10 Seaspray (with his HftD voyager look)
Breacher (with Seaspray, in the same episode)
Hound
Inferno
Rodimus
Ironhide
Drift
Red Alert
Jetfire
Elita-One
AND DONT FORGET THE DECEPTICONS! Bludgeon (the skull-faced samurai)
Crankcase (a TF that look like the Predator is a winner in my book)
Boom-Bust (he would'nt be a pretender, but he would change from a something to a monstrous werebat)
Hatchet (a jet who change into an horrible beast)
Skullgrin (based on the Generation toy)
The Seacons combiner team (count for five and would go well in Seaspray and Breacher's episode)
Wait a minit. All my 'cons are monster themed! Oh I so want to see them all, more than the Autobots.
But yeah, a two-part episode involving the Seacons, Seaspray, and Breacher would be totally win. I so want this to happen! I'll wish uppon a star for it.