Those trailers are interesting, though I need a bit more time to go through each any every option.
The Marauder BA elicited a "Wait, what?" response from me, but I like it over all, it may be a bit light on armor, though.
The Spectre on the other hand strikes me as intriguing; given that mechanical jump boosters only provide 1 MP, I see them more useful for RPG scale and for the ground speed boost than for their actual jump MP.
I like the new Vulture, but the latest Mad Cat seems excessive to me with that XXL engine, beyond that, why armor the gyro with an engine like that?