If you get the chance to buy/play Rebel Strike for Gamecube I'm finding it to have a lot of inspiration for new custom projects.
An Imperial APC is one of the new vehicles seen that really sparks my interest... Not too large, and not overly complex in design either (Very angular) so not a very difficult ship to make from scratch. They're a great, and heavily used vehicle in the game so far, so they're definitely on my too-do list now.
Also, the game has given a new "look" to the Imperial Storm Commando... The once simple "black" stormtrooper design has been given a facelift...
Typical EU contradiction but honestly I like Rebelstrike's design MUCH more. It's at least more creative. The look of the Storm Commando's is much more menacing now and is 100% unique/new. Also even has rank indication though subtle red striping. Features a new helmet, and completely new design though (less armor for sure, and different looking all together).
There's a ton of other fun looking custom possibilities coming out of this game already though, so hopefully some others find inspiration from Rebel Strike like I have after this post.