Thanks, everyone, for the comments and the rep! As people have expressed quite a bit of interest in the kitbashed/custom models, I feel compelled to point out that in my army showcase (sig, sidebar, top, or wherever) there are a few more similarly kitbashed--yet finished--models, such as some totally scrap-built Havocs and the aforepictured 3 Obliterators (of less note: homemade sonic blasters on the Noise Marines and a banner bearer of whom I'm rather proud among the normal marines).
Mmm, this thread is giving me plenty of incentive to get cracking on my painting. Just as I'd hoped!
Here, I'll spare you lot the hassle of heading over to that thread:
Chaos Warriors (archive and modern), Space Marines, Chaos Space Marines--hell, there's even a few IG chunks thrown in there!
Chaos Warrior cloak and banner, and his legs are really CSM arms. Hence the green stuff mud...
These are by no means all of the photos, but I thought I'd just...give some examples.