I wouldn't mind expanding into niches if BMW worked to preserve it's driving base. If they could dial back in everything that put them in their current position, then the more the merrier. But until the 3er drives like a 3er (I shouldn't have to spend money on restricted lines and mandatory electronic dampers and still always have to press a button to get the closest setting to "BMW" feel) and they stop just chasing sales, I don't agree with more and more.
When they make each core model the Ultimate Driving Machine again, then they can proliferate for the masses.
-'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-