If there's serious interest in the MDAC update (GBP200 + shipping, which to the UK is a tad under GBP30) then I'll start to seriously consider it and start putting the systems in place to handle the updates.
Update service for European customers only due to customs issues.
Maybe a list will help, so I have some idea of the numbers involved.
If your unit is updated, then its a "simple" DIY job to add the new PSU card to MDAC as part of the MPAX upgrade (if it happens which depends on its value for money compared to the BDAC).
If your unit is updated, then I would take on the warranty obligations for your MDAC - basically in case of any warranty issue you would pay the shipping costs - I will repair your unit.
Lifetime warranty on the updated MDAC excluding components with a finite lifetime (such as the OLED display and Capacitors etc) - in case of "Lifetime components" I'd still service your unit for free (excluding the shipping costs) but would charge you the replacement parts at our cost - Eg. once imported into Europe a new OLED panel cost about GBP15...
If your unit has a known fault (such as a sticky relay) - then please let me know and I'll service the unit during the upgrade.
I can also offer a GBP50 discount on the MPAX package for updated units (IF the MPAX makes it into production).
I believe I might also have an idea to further improve the performance of the "Upgrade" which might help reduce the negative sonic variations between software builds...
If you are considering sending your unit, then original packaging is FULLY recommend, as a couple of recent units sent to me where very badly packaged although luckily relatively undamaged once I spent time "restoring" the units - however be warned that I do not have spare mechanical items!