Higby has tweeted the eye level profiles of the 3 empire tanks and it's brought up quite a big concern for me.
http://yfrog.com/nvdqqwgj
Now if you look at the profiles of the 3 tanks, the magrider looks to be the tallest but also to present the largest target profile of the three. Especially when you consider the tanks coming head on with each other - the vanguard will present a tiny profile.
As (nearly) a full time magrider gunner, to me, I'd want to be in a vanguard which will be the hardest to hit and would pity the poor fool in the magrider. I completely understand the need to differentiate the shapes on the tanks. Also I have to say that they all look brilliant. However, the magrider to me looks like it will be very very easy to hit if the profiles all look as they do in this picture.
In addition, the magrider is shot almost straight on in the picture and still presents the biggest profile. I would imagine that the differences would be even more pronounced if the shot was taken from ahead of the prowler or the vanguard.
At least make it so its not the tallest of the three tanks as well as the widest! (Is this related to it actually being the same height withtout the additional 'hover') Dont forget that if an enemy tank hits the ground under the tank, then this will also be almost a direct hit with the splash damage, therefore the magrider should be not as tall as the other 2 tanks so as to provide an equivalent target area.
Much love to the dev team - its all looking well hot!