Yeah, the shared mold is a bit of a double-edged sword in this case -- on the one hand it's a bit "m'eh, already got this", even with the new parts. On the other hand, Triggerhappy is fantastic so it's hard to really be all that bothered.
And who am I kidding? Misfire was my second Transformer as a kid and this is a super-accurate new rendition of him. I'm going to be all over it when it comes out.