And what better way to test mod compatibility than to play the IR's with a mod that modifies just about everything about the game?
The problem with that is you create the potential of clogging up and slowing down our mod's developement, in order to accomplish this. I think it would be damaging to start mixing results of combinations with other mods and muts in our feedback/bug reports on IRs.
Also, it is my opinion that we do not need Jb spending entire evenings trying to figure out why this thing is 'level-upping' right (or whatever) and that thing isn't.
Now, I realize Jb himself would probably have said, or will say, something entirely different. He may actually want to sit down and take the time to make our stuff work with that mutator, and of course he's writing the code in question, so it's his call.
But for me, I like us being compatible with other mods and muts, just not at the cost of our own. So IMO, even if Jb means well, I personally prefer that we finish making our mod first, and then maybe worry about compatibility later on down the road. His time is too important to us.