Stumbled across this a few minutes ago; as the title says, it's a retrospective by a fellow who was part of Freeverse, interspersed with XBLA renders and artwork.
Part 1
Part 2
(There's supposedly a part 3, but a search turned up nothing)
Also some hi-rez textures which may already be easily available elsewhere, but I'm linking to them anyway.
Here we can get a closer look at some XBLA designs--a Fighter, a Drone, and the Security Officer. There's also some sketches (presumably by Steven Tzé) of more enemies, the SO, and what may have meant to be Leela.