Great review! Answered a lot of my questions. Like the others, I think all these cassettes are must-buys.
Mind you, I think they're each a little flawed, save Ratbat - who looks fantastic. Proportion issues are the real stone-in-the-proverbial-shoe... but after getting the first two bots, I think how you pose these guys can help cover up their flaws. (The first two have some 18 points of articulation, which helps.)
For this odd Ravage homage, I'm wondering if by pulling out his side panels PARTWAY, and adjusting his legs in a bit more natural pose if he'd look a little better. (?) Also wondering if any 3rd party missiles will help deck him out. Missiles are going to need to happen for this guy.
Either way, I'm stoked about ordering these. Fantastic idea with the Senator Ratbat mode. I somehow feel much better about that being a combined mode instead of doing a ret-con and saying he's a full sized walking character.