One problem I always had with Armada minicons was the frequently awkward robot mode. They had some really interesting alt-modes, though. And their ability to become or merge into accessories was a fun gimmick. So what if Hasbro rebooted minicons through titan masters? The vehicle accessories would be homages to the Armada alt modes and use 5mm ports to combine into a super weapon. The head mode would evoke the minicon face (or an armada character). And, of course, the titan master would be a less awkward looking robot. Everybody wins.
Why nor just make Minimus Ambus style/sized Micromaster that come in a two-pack at the Titanmaster price($5)? Then you can just redo some of the Minicons in that style.
I'd be surprised if Power of the Primes doesn't use either Micromasters or Minicons at the Titanmaster size as its gimmick. Considering how wildly successful Titans Return SEEMS to be, it'd be pretty disappointing to completely abandon the play style so soon.