Just give us all of the parts, many options for true offroad cars and rice too, then we'll choose what we want. Also I would love the offroad update because the races atm are getting really dull and repetative when you max out your cars and start grinding RP, so this update will break the monotony that the race system has at the moment. True offroad wheels would be a plus as well
As for the checkpoints, you might as well just put little gates like they do in Forza Horizon 2 and many rally games, just 2 posts of some sort to create a checkpoints you must get, and let the players choose the rest of the path, that could work well