I haven't had a time to get into this as yet, as I'm catching up on shows I'm behind on. So this is a surface evaluation.
Despite being so large, your screenshots of your U2Skaarj in-game are very clear. However it's blurry in my games for some reason.
Possibly from shrinking the 1072x1072 textures to the model? Or a different graphic setup you're using?
If my ut2004's UnrealEd wasn't on the blink (dunno why) I was toying with extracting other skins made for the U2Skaarj there to use in skinning your model... but I can't access those at the moment.
I popped into Unreal2 to check the original skins:

Not sure why, but I was curious if there was anything I could use.
So, it remains blurry... and it's got AdvancedModelSupport taunts built into it:
Your team colors work great, although the structure of your .int is unfamiliar to me.
Nephew9999 wrote:-i need to create a cool voicepack 4 it
In my collection of voicepacks I use
Hgrunt for a lot of my Skaarj. I forget what game it comes from but it sounds like a stronger version of the Skaarj Hybrid vp.
On a random note (not sure why) but when the model is just standing doing nothing, it seems to shift its center of balance so it's resting on its heels.