Although the concept to allow an in between class sounds good, I really fail to see where implementing another class would be of any benefit, unless if you were wanting to replace WS with a 2.5 class. Or just make workstock a 2.45 class only allowing 62mm chargers or smaller in. Lord knows a stock HX35 isn't a player in workstock. Bottom line is this, adding another class will only take away from the already trivial payouts offered to attract trucks in.
Just out of curiosity and since 2.6 has sort of been brought up, what would happen if they ran 2.6 like they did with the 2.8/3.0 down at BOB with the different weights for compressor housings larger than S400s.
S300 8000 lbs
S400 or larger frame 7500 lbs or 7600 lbs etc?