Prime being a goddamn long-nose truck with flames on the hood you begin to realise that they are not catering this to the old-school fans.
Gen 2 prime was a long nose truck, and if not for the shitty paint job they gave him he was actually pretty cool. Not as cool as the original, but a good repaint and he would've been sweet.
No "mass changing" properties, so who the hell knows how they'll do blaster/soundwave (if at all) and what form they'll give Megatron (fondue pot seems popular here).
My guess for Megatron would be an M1 Abrams.
That seems to make the most sense.
They couldn't really do soundwave as he was, anyways...who the hell owns a tape deck anymore? I guess they could've done him as an MP3 player...with flash cards as the tapes? I dunno.
But no mass changing also means no Perceptor, Ravage, Rumble, Laserbeak, Insecticons, or the lame autobot cassettes.
I'm crossing my fingers for a Devastator appearance, but I'm not holding my breath.