I don't think that there would be so many versions. Maybe 2 or 3, not more, depends on the complexity of the addon. And maybe some of them may join forces, so things would go even much faster, but in the case of SG mods, this is speculation, this hasn't happened yet, maybe no one modifies anything.
About you developing what BIS develops for AA, sure they would pissed, of course they would, they actually make that to earn their money. That's the difference, the why they are right being pissed and why you would be less right (depends about what exactly, too), you are not making any money, supposedly just having fun, and having the satisfaction of making something good for others. That, and the fact that uncredited modifications are very rare, are the reasons of why you should get much less pissed.
Impatience is one of the greatest bitches, I know. But it isn't always easy to just avoid her. The longer the wait, the more bitching she becomes. And the more beautiful of what you are waiting for is, even the harder it is to avoid impatience. And it increases a hundred fold when you want that to play it until you can't push the keyboard anymore, when one really desires that.
It is always much easier to ask for patience for people who are not so eager about something, or for people that already have the thing.
Oh, and, in case somebody remotely thinks about it, no, I'm not complaining, nor ranting... anything, I'm just having a fair and polite discussion on something I wanted to discuss.
Cheers
