I don't think is bad but I don't think is good.
I don't know, I personally don't have the spirit to like it anymore.
Dirge could be better.
What I dont like
The waist as you pointed is not as sturdy.
The colours dont look as lively as Ramjet
Pretty pricey and overly big box for this piece.
Plastic feels cheap
the fan thrusters should look better as I think the whole solid piece makes it doesn't look like a propeller.
What I like:
The face is cool, unlike the Yes models I seen, TT nailed most aspect of it.