Indeed Varis, I've been messing around with some of the mods available, Sins Plus, Epic Mod, Distant Stars, Star Trek: Sacrifice of Angels, ect, and I have enjoyed each and every one of those mods as they all have there own areas of focus that seperate one from the other.
While i've not tried my hand at modeling for Sins other than taking a quick look at the various files involved, I was sorta hoping to gain a free ride on someone elses work! 
I spent alot of time modeling and converting for other games (SFC II, SFC III, HOI 2, Silent Hunter 2-3, ect.)
Sins has been a great diversion for me while I enjoy another cold Canadian winter and thought it might be fun to spend my time within a game actually playing the game as opposed to tinkering with it, that all said, the fact that there are not alot of ship models to download into ones game is starting to prove to be a tempting challenge that I am unsure I can resist!
So with that said I think I just may go ahead and make a few of my own, I'll more than likely just change the ship models and leave various stock stats intact as I'm not all that keen on doing the whole re-balancing thing 
After I shovel the snow today I'll get started on this little project I think...
Snowpeople