In my time on the ITAC, the subject came up numerous times. In general, the idea was frowned upon. I can see both sides and I only fought hard for it in cases like the E36 and other ITS cars being moved to ITR.

But, the make up of the ITAC at the time was not in favor. I wouldn't say that they "didn't care about the budget racer", though. One guy is VERY budget oriented, (the guy who says use a chain as an engine mount substitute) and IIRC he was no fan of dual classing.
I can't comment on the CRB as a whole, as they all aren't on the concalls.

I CAN see how appreciating the low budget guy can be hard for anybody though, when you look around the padddock at races, especially big National races. I'm always impressed by the what i call "relax/race dollar ratio" has changed over the years. It used to be guys would put the majority of their racing budget into the car, and sleep in a tent or the back of a truck. MAYbe an enclosed trailer...but that was living large, LOL. Now, I see diesel pushers and toter homes pulling $10K racecars.