Having spent most of the last 2 years struggling to get my 'cabin-pressure' speaker problem sorted out (success now hopefully !) I haven't dabbled with the +3db or Apodising changes. I do hope the software updates come soon and this doesn't turn out to be another false dawn. A simple thing like customizing the Source names on 7K2 speakers can't be done safely because a backup copy of the Firmware has never been made available publicly.
A quick look at the Firmware page shows that apart from the HD621 and Sooloos only the Configuration program has been updated in the last year.
When M do communicate, either through staff or dealers and it doesn't pan out , customers will always feel that they are getting a rough deal.
M