This looks pretty cool. It's sort of similar to 696's swerve, which is one of the coolest I've seen in a long time. Their bearing setup works very nicely, but they had to do an incredible amount of machining to make the module frames.
http://2015blog.team696.org/wp-conte...1/IMG_0390.jpg
http://2015blog.team696.org/wp-conte...119_134125.jpg
http://2015blog.team696.org/wp-conte...118_212811.jpg
A few suggestions/ideas:
If you're trying to save weight, you could likely make the whole thing shorter and use gears where you have chains. Vex sells gears with the bolt pattern in them, so you can still have your dead axle.
I'm a little worried about the two plates that drop down and hold the bearings for the bevel gears. The .375" ID flanged round bearings are typically .220" thick or so IIRC, meaning the two fasteners are likely 6's or 8's. Those plates look like they might have trouble support the bearings hanging below them, but it's hard to know from just looking at a few screenshots.
The vertical shaft has only one bearing. This screen shot might be missing the other, but I'd highly recommend adding another one.