Three questions come to mind
without all the tech jargon is it possible?
Yes, I have already done Bows and X-Bows for my own personal use some wooden and a few made out of junk found ingame already that I wanted to release within my SSP - WE mod but I have no time to polish anything into a state I deem releasable.
would or could we find a modder with the skills to do it?
The only modder around here I know can get this done is myself, animators are a rarity around here.
http://www.youtube.com/watch?v=h90bt-rr9wk
http://www.youtube.com/watch?v=iiM9GIXOM9s
would it be worth it seeing as new vegas is coming out soon?
Not sure, personally I am not going to purchase FO:NV until a solution to the Steam garbage is found, but many others will as they do not care about thier consumer rights being sold off.
There is also the fact that many of us who decode these games are no longer around to decode FO:NV so any kind of exporter updates for that game are going to be far far FARRR.... into the future so as far as Modding plans go think ~1-2 Months just to get NifSkope to be able to open, read and alter all of the new stuff, this is just the very basics of functionality there are tons of people and time that goes into cracking the unknowns and with myself and many of the others that cracked Oblivion and FO3 no longer present for FO:NV its going to take months to get others up to speed on those aspects and even longer to gets the exporters updated -> that is ofcourse based on just how far updated FO:NV is from FO3 it would not be a streach to think Oblivion to FO3 in differences quite a few of those videos show alot of improvements.
would it be better to settle for a crossbow and get it put it in the leveled lists, that is if we could find somebody with the skills willing to do it?
seeing as somebody has already made one if we could get there permission and get it unblocked add it to the leveled list or make them a little more abundant
The problem with any X-Bow mods made that are based off the Dart Gun are the animations for the DG do not allow for a genuine X-Bow as the string draw is far to small and that can not be gotten around without new animations even one based off the DG's would need to be re-worked to not look strange, on the other hand having something is better then nothing.