Fleafa - I think it looks good. The model represents the unit quite well. Possibly a more detailed paint treatment would spruce up the large flat surfaces. It looks like your Crons are done in the T-800 themed Silver Death Skeleton motif
, which is cool.
When you cast the extra legs and repeated bits did they require a lot of sanding?
I ask because I am going to send out a unit to Shapeways and use the same material. I'm not sure if the poly density of my model is high enough to prevent faceting on large flat surfaces.
The selling to re-coup issue is touchy. I looked at this sites IP regulations, it seems to be ok here, but out in the world the GW IP trolls/lawyers could really give it to you.
If you make more copies for personal use and keep it on the down low you should be fine.
Sucks the studio types ignored you. Let em laugh, you'll get better. Just keep at it.