1) WAY MORE EVENTS
2) Real restrictions for certain events, one make races for every company (GT4)
3) AI that acts like their racing
4) Minimum 500 Premium cars
5) More real life tracks and tracks from past GT
6) More realistic modding/tuning options and format (engine swaps, brakes, tuning your full adjust suspension)
7) PORSCHE PORSCHE PORSCHE
8) dont need 50 different skylines
9) get rid of the XP system all together, it was Forza's thing and works for them...Your not Forza and don't try to be
10) Top Gear challenges... fun challenges based on the Top Gear tv show with their humor and creativity. "Be the stig" Take the top 20 lap times and cars from the last season that the stig was on Top Gear and make those times in that car a "special event" on its own.
11) WAY more race mods, don't need every car to be able to RM but at least 200 would be nice (mainly sports cars, road cars that are used in club racing or autocrossing)
12) Interactive "Skip Barber" racing school
13) More "race cars" (lms gt2, gt3, many others, new and classic)
14) more interactive B-spec, don't just let him get better as his xp levels up (your going to get rid of the XP system for GT6, hypetheticaly) give us interactive "driving skills" drills/practice so WE can teach him the racing line, proper breaking, passing, ext..
15) I like the engine/ chassis rebuild but expand on it and it shouldn't cost 50% of the car. about 10% sounds good.
16) a REAL and noticable damage model (may just be me but i'm updated to the latest patch and have hardly seen any good damage on or off line)
17) Take whatever time you need to get it right, if you take 6 years i wouldn't care as long as its finished game!!!