Eldar models aren't easy, man. Compound curves in at least 2 directions (if you're lucky). If you are asking for someone to draw up a Falcon and variants, well, I dunno, I've considered it. What stops me is the fact that I would want like 100+ of them (literally) myself, and I don't see me being able to cast more than 2 by myself (or 10 with help*).
Well, that and would take me all year to actually do it, and even then they'd only be rough copies of the existing models (certainly no better than the SG models, which are FINE, geez - how anyone can like the FW firestorm over the SG one is a mystery to me). The only reason I might consider doing full-on grav-tanks is so I can impose my own version of the tanks on the rest of you (which would probably go over like a lead balloon, but I'll burn that bridge when I come to it). I do have an idea for a much better (in my opinion) wave serpent.
Oh, another reason might be if I were ever moved to make a new-style equivalent to the warp hunter (as an AV, not a super-heavy a-la the Cobra). But that would be a dubious unit, so that probably won't happen.
That said I
am trying, but there is alot of trial and error involved and I am slow.