To All people here in NLSC,
I think I've read somewhere from an admin that you can do anything you want to this game. Do what makes you happy. Do any kind of MOD as long as it makes you happy.
If someone created a version of something, and someone also wanted to do the same, then let it be! as long as you're happy with what you're doing. And you're happy sharing it with people who just doesn't have the abilities to create for their own.
AND OF COURSE, more importantly, if doing a mod includes upgrading or improving or modifying or copying any one's original work, or using those as base for your work, then YOU MUST ask for permission. I think this is just the moral thing to do.

Make sure that they will be credited in your work.
If for some reason he doesn't want you to use his work, then move on, let him be. Do something else. Or do the same work from scratch.
Sir salemjerry44 , i think, (correct me if I'm wrong sir), based his work from the baballs modder. I think we can all see that as users of the mod. I have the WKRoster from baballs, so I can see. BUT i believe he asked for the permission of the modder. I think it is weakobe? And weakobe said its ok. So what's the argument about?
Maybe there's other people involved in the baballs mod who doesn't want to share theirs? Then I think sir jerry can ask weakobe to talk to them.
FYI to all! Sir salemjerry DOES NOT ASK FOR PAYMENTS FOR HIS WORK!!! I've asked many updates and HE DID NOT EVEN MENTION ANYTHING ABOUT MONEY. Very generous person. Although I can understand if he asked for donations in this thread. hahaha. The time given to this mod is absolutely amazing.
I hope Sir jerry you can sort this issue out and release your work immediately becase this is by far the 2nd best mod i've used. Second to UBR by hawk23. hahaha. I think you'll agree.
That's all . thanks. justsaying.

And one last thing, if salemjerry wants to EXCLUSIVELY share his mod to selected people, then, let it be! Its his hard work, he can do anything he wants with it.