For me the affect of weight transfer is something that LFS does very well, but more so on the front wheel drive models such as XFG. In fact, to me the XFG is the only vehicle in LFS that is believable when it comes to driving feel. Am not saying that every other vehicle is totally borked, this is a work in progress so would expect at some point that the others will be improved upon also.
As for borrowing elements from iracing, more effort on the tracks as pointed out would work, in exchange for LFS's netcode which is excellent.