It seems to me that the flood gates have opened and there are many compatible cars now in ITA. Some are new, but many came down from where they were outclassed in ITS. The field is beginning to look like Kirk’s IT2 utopia. At this point, I wouldn’t propose anything to reign in any of them.

As for the back-packers of ITA, I’m not aware of anything that could be done to speed ‘em up, but of course it must be a case by case basis. As for the MR2 – lowering its weight would do nothing, because 2370 is already very hard to get down to within the ITA rules. I believe that is the same story for the GT-S. I’m not aware of anything else that could be done in the framework of IT.

I'm not sure why anyone would be opposed to a move to ITB, unless it comes at a such a weight penalty that it doesn't do much to help competitiveness. In that case the sole effect would be to slow the car, and make people buy new wheels. That would be a shame.