E30 318iS
E30 325iS Evo
E30 M3
E30 M3 DTM
E30 M3 Pro-drive rally car
E36 M3
E34 M5
E39 M5
E36 320iS STW
BMW M1
E9 635Csi
CSL race car (batmobile)
205GTi 1.6 or 1.9
309GTi
Ferrari 360 CS
Ferrari Enzo FXX
Lambo Reventon
Ford mkII escort
Ford mkII escort rally car
Ford Sierra Cosworth
'67 Mustang Fastback
Aston Martin DBR9
Aston Martin One77
Aeriel Atom
Konigzeg
Mercedes SL65 black edition
Mercedes 300SLR No. 722 (Sterling Moss' old race car)
Mercedes SLR Maclaren 722
More Formula D and D1 cars,
More DTM cars,
Few more proper Pikes Pike cars,
Some rallycross cars (considering the rallying in GT5 is more like Rallycross anyway)
Few more F1 cars if possible (I know Berni's politics are tricky for that one)
More karts (maybe older styles and a few 250s)
Few more Rally jeeps like the Pajero and RSC such as the Bowler wildcat etc
There's loads I can't think of right now but those are a few anyway.
All the older cars that were in GT1, 2, 3, 4 and Prologue that aren't in GT5 (it can't be that hard!!! even to make standard versions of them!)
Obviously other than cars, some of the main things I want is full RWD of 4wd cars, provision for engine swaps and even a basic livery editor and more tracks such as Willow Springs, Ebisu, Meihan, Sliverstone, Brands hatch, Lyde, Mondello

, Bathurst and some hillclimbs like Pike's Peak and Goodwood... few drift touges such as Karpacx and Mt. Haruna