I think the LSD is really the biggest issue.
Brakes, yeah, if you track it you might actually benefit from them, but if they're already on the 1er, why not bring them as a performance option for the 3er?
And I still say they need to bring back the exact Estoril. They've got a color now that's close, but it's still just not the same. A limited run of Estoril for BMW Perf vehicles would be nice.