The force feedback was fixed with the Real Feel pluggin which in rfactor 2 is improved...
Really Isi is trying to make a rock solid engine where amazing mods will be really easy to make as they have thought about everything.
From sweet real time lighting with hdr and bloom ,to improved ai,great changeable weather effects,rock solid netcode ,great mechanical damage added to the visual damage,great driver/pitcrew/spectators animations...etc.. this is the most complete sim there will ever be....if they do it right.
I really believe that if anyone can somehow make it happen it's ISI.I mean the engine used in almost every sim out there was made by ISI (gmotor).If it was not for Isi we would never have gtr1/2/evo race on,iracing,etc...