Personally I think it looks great. The action figure Tracy boys look fine piloting their respective craft and I 'm looking forward to seeing a full episode.
The animation using models and computers looks excellent, a far cry from the usual CGI fare which, to be honest I've never been that keen on.
And for us older fans there's plenty of nods to the past, most obviously the late Peter Dyneley doing the Thunderbird countdown. But one thing that convinces me that the producers have got that essential understanding of what Thunderbirds was all about is the simple image of a helping hand.
Thunderbirds are definitely Go!