Just some more updates.

Really had a chance to rag the car in sport mode today. Performance is pretty Ballistic and it's light on its toes being in MSport trim. I am glad of the MSport brake upgrade as this was a definite weakness in my old 535d.
Mpg avg. is still good and my son in particularly can really max the eDrive on his daily commute. If anything you wish the eDrive was even more powerful than its 60hp and I would gladly trade another 50mm of boot space for more battery. Today I switched on all the BMW connected drive services and although some are a bit gimmicky - I think BMW's claim to be the most connected car company is justified. The only big disappointment is the WIFI hotspot functionality which would be great BUT it's only 3G. This is the sort of thing that should be instantly upgradable but isn't. Will keep a look out for anyone doing upgrades / coding independently.