I voted no. As the lack of head articulation kills it for me. I think it's a must have for any modern action figure. It gives the figure personality.
I agree with you Goktimus that it's absolutely unnecessary to make Galvatron a headmaster, but I personally don't have any problem with him being one. In fact I'm enjoying this gimmick a lot more than I thought I'd be. The problem I have is surely they could've found a better way to make the gimmick work better and preserve the neck rotation. I don't think an external helmet would work though as it'll make the head look too big on a Voyager body. That's why only the Leaders have integrated masks (with roughly the same sized heads across the board, Deluxes look a bit bobble headed and Voyagers without any add on mask like Astrotrain and Alpha Trion look quite beefy)
I've seen him in person and he's so close to be that perfect modern Galvatron for me. The sculpt is incredibly strong and expressive and the cannon mode just captures the essence of that ridiculous design so well, better than some of the 3rd party takes imho.
Think I will pick him up eventually and mod the neck. But I don't want to compromise the head master gimmick and compatibility either.