So there won't be a GT2 category for example with the BMW M3 and Aston GTE? Whats the point of having the Aston GTE go against the GT3 car?
These days there are various series which race the GTE and GT3 cars together (like 2013/2014 ELMS).
They use BoP to artificially slow down the GT3 cars, and manage to separate GTE and GT3 by up to 2 seconds over a 2 minute lap (e.g. Silverstone ELMS qualifying this year).
The truth is that GT3 BoP varies somewhat in each different series (Blancpain, International GT Open, ELMS, ADAC, Nurburgring 24h/VLN). If they wanted, any series could run GTE and GT3 to effectively identical laptimes. In fact, I think that's what is likely to happen to the 2015 GT regulations since the ACU and FIA are once again talking about merging GT categories back.
Would you seriously prefer a small separate GTE class (Aston, M3, perhaps a Corvette, Porsche/Ferrari probably not available) which is <1 second per minute faster than GT3, or would you prefer a BoP GT class which merges GTE cars into the wider GT3 group to create a large amount of choice?
Assetto Corsa has a similar dilemma: They have the M3 GTE, Ferrari 458 GT2 and the P4/5 GT2 alongside the Z4, SLS, MP4-12C GT3 cars, and then the Evora GX (nearly GT3 spec but not quite). Do they BoP everything into a single broad class or do they keep tiny laptime differences of <1 second per minute between each group?
In the end, the most important thing to remember is that any real race series would probably just BoP all GT cars together to create larger fields. There's no "definitive" BoP setting for a GT car, each series plays around with them the whole time.
