Ok....
Initially, the mod did have wear on the tyres which was a lot more gradual over a 20-25 lap stint around a mid sized oval (Birmingham for eg) than the 2X wear and the consensus was that it was too much to deal with along with controlling the car, racing etc and it was removed. My personal feeling on 2X wear is that it is not very gradual at all, and that any spin or slight wheelspin causes a dramatic drop off in the condition of the tyre. This, for me, is too much for making good racing and will result in a tippy toe type, too scared to push hard style of racing...Is this what we are really trying to acheive?
As has been pointed out, the mod is now roughly around 3 years old now and the stability of the physics throughout has maybe led to the ultimate pace being found, particularly through setups....An overhaul of the tarmac physics has been on my mind, especially through the F2 work currently being done but with other projects on the go and needing to be finished, I'm afraid that we will not be looking into any physics changes for now due to just having too much to do with what we have. The mod is at 1.3 now and now has a certain amount of stability in it, we shall try to have a look at it once other projects are out of the way but we can't promise anything at this time.
Cheers
Grasser233