I posted these to my deviantart a long while back, but I thought I'd share them here for a more... appreciative audience ;) All are game-quality meshes under 100k triangles.
Reimagined Timberwolf. I redesigned the center torso to look more like sloped armor and less "Shoot Here" with the giant central cockpit. The cockpit glass itself is more realistically scaled and arranged to be less of an obvious target. The general torso shape is intended to be more reminiscent of the old unseen Marauder and as a side benefit the decorative "feathers" behind the central fuselage now become practical as air intake channels.
Weapons have been scaled to more realistic sizes (I started with a model of an LRM round which I made to scale based on lots and lots of math), which does make the LRM tubes appear quite small by the standards of the original art, but all 120 rounds now fit in the "ears" and the missiles are configured for a high launch angle to give a more long-range feel. The front of the missile pods now have phased-array radar panels.
My reimagined Mad Dog gets much the same treatment, but sticks a little closer to the original art. It and the Timbie are heavily derived from the MechWarrior 2 ingame meshes, which is where it gets the triangular pulse laser housings, leg design, etc.
My Dire Wolf. This one departs less than the others from the original art, as the Dire Wolf was already pretty good in its original form. I'm still considering changing the design of the arms to make them look more "flippy" since they lack actuators.
My Warhawk is set up to make the arms look more flippy. When the PPC barrels are removed (all these meshes are designed to be modular) the arms take on a look more similar to a Jenner's arm paddles.