i think your analysis of "flooring it off line w/out launch control" is wrong. i always do this and all my buddies with m3s do this and none of our cars are jerky shifting in 1 3 5 or 7. the shifts 1 3 5 7 feel the same as 2 4 6 and feel the same as m3s that do not get floored off the line. what exactly are you feeling in 1 3 5 7?
Current: 2013 E92 M3, SSII, Black extended, ZCP, fully loaded
Mods: Black Hood Vents, Black Grilles, Black Side Grilles, Lux H8 v. 4.0, CF Mirrors, CF Spoiler, Black ///M Emblem, Evolve Tune, Dinan CF Intake, Dinan Pulley, Akrapovic Evo
Retired: 2011.5 E92 M3, SSII