In my obsessive quest for balance, I am actually editing the code of some weapons (and playertypes) on my server to get balance down to the smallest iota. I am using the TF2 wiki to get damage per bullet, how many bullets, how often you can fire, the spread of the bullets, how many bullets you have in each clip, the speed and jump height of each class, and the health of each class.
Basically, I'm trying to copy the exact measurements of TF2 into Blockland for my server. It'll take a while, but it'll be pretty darn good in the end. Actual battles instead of two hits and your dead! No more "oops I just rocketed you in the face after spamming 80 of them for insta-kill"!
Of course, I won't be releasing it because of the lack of original models. And even if I did have original models, I don't think it would be a good idea to release it anyways, I'd just use it for my server only.