Mod - I'd really like to see the Whelen Mod get updated with a couple new bodies. Ian of Smiffsden had one of them about 80% done, but real life ended up taking higher priority. If there is someone out there who loves short track racing and especially asphalt Tour-Type Modifieds, and is well versed on 3dmax... Please contact me.
Track - There are so many on my To-Do list. I'll get around to making them eventually.
Thing for NR2003 - Like the poster above (mrsir1995), I'd love to have an improved program for building tracks that is far more versatile and sophisticated than Sandbox. Working on grades and elevations in Sandbox (aka X-sections) is so difficult. Also, it would be nice to have tracks that can render object dynamic shading in accordance to their angle to the sun (or light source in night tracks) like all of the new racing sims do (aka Assetto Corsa, PCars, NACAR Heat), but I guess that would be more in the exe than a track building program. Right now, we have to do all of that shading of surfaces in Sandbox manually. Same with the 3dos. We have to shade those per their relationship to the sun when we texture them. And making a night track environment in Sandbox is literally a nightmare PITA. That's why is takes so long to make a quality track for NR2003.