I had similar thoughts but I find this title does unexpected things.
Speculation Warning 2:
So I considered who else could be a good candidate and I'd say Rung. Remember the Minimus is a lower tier 1 percenter capable of load bearing, I'd say Rung could be in that class too.
But as it's been pointed out Tailgate's inner most energon is green (issue 12) and not pink like the majority. That could be foreshadowing much like MTMTE #16 where the deaths of the previous "Magni" showed their hands going for the return trigger.