Templar, I've been testing 2.2 for an hour or so now and it's lost a lot on the slip effects and surface feeling. I haven't tested it on tarmac, but on gravel it doesn't feel quite right. I notice that in an earlier post you were saying that you're not a driver, so please don't take this as me trying to be patronising, it just my observations from my fairly limited experience of driving on dirt / gravel in real life.
At low speeds you feel a lot more of the road surface through the wheel. Every bump, pot-hole and even large stones can be felt and will have quite a pronounced effect, physically shifting the wheel left or right in your hands, perhaps by as much as 10 degrees, enough to keep you busy keeping the car in a straight line. You will feel a considerable amount of body roll too, so the ride can actually feel quite violent. Road resistance to your steering inputs should be quite high due to increased traction and you should feel a reasonable amount of low-frequency vibration through the wheel. I've just tried driving the first few corners of Bronfelen at under 15mph and I'm not getting this at all even with my Logitech profiler set to 100% effects strength and all the ingame sliders at 100%.
As your speed increases and the suspension works harder, these bump steer and roll effects become less pronounced and what you feel becomes a combination of vibration through the wheel (steering column) and the seat (chassis). Obviously, most people aren't running simvibe, so we're not feeling the chassis vibration, but there is not enough coming through the wheel now to compensate for this.
When you break traction and get the car sideways you should feel a whole lot more violent, stuttering vibration as the tyres try to bite into the loose surface of the road and this seems to have been lost in 2.2 compared to your 2.1 version.
In terms of the feeling of the weight transfer and self aligning torque though, you have it spot on in my opinion.
Again, I'm not trying to be overly critical or patronising, it's just my opinion based on my limited real life experience and for me 2.2 has lost some of the feel that 2.1 had.
I'm going to try your impact FFB now and see how I get on with that.