I think the 3GT is overkill and while it will hopefully look better than the 5GT (not hard to do) the sales would be better covered by more touring engine options with marketing in the USA.
The question with the 3/4GC is how many standard 5er sales it'll take.
Personally, I'd like to see the r&d go back to building impeccable steering feel and handling. With all if the new models, BMW can't lose sight of what made it what it is.
I am in favor of a standard sedan version if the 1/2er RWD platform with a better fascia than the newest 1er hatch (smaller grilles and sleeker headlights). A 128i/228i four door the size of the E36 would be awesome.
-'15 BMW 335i xDrive (F30): Black Saphire, Oyster, DHP, ZPP, ZSL, 6 MT; En route!
-'12 BMW 328i (E91): Tasman Green, Oyster, Premium, Sport, Auto; 6/26/2012-
-'06 BMW 325i (E90): Arctic, Grey, Premium, Auto; 7/2009-5/2012
-'04 MINI Cooper (R50): Indi Blue w/White Top, Black, Cold Weather, Manual; 1/2/2004-