Another remote future option to add to the list is to ask for the chief EQ engineer to answer for if a future retrofit will be feasible. I would be surprised if the required modularity is absent especially if the problem is just a chip supply or something. Even the most basic "Mercedes" Smart EQ has 22kw as a possibility and it seems to be retro-fittable. Some early ones didn't have any DC from preliminary check so fast AC was a concern!
Another remote future option might be retrofit wireless charging pad. Agreed standards last time I checked went up to 11kw though some pad tests have been successfully working at 40kw (via splicing into the DC system or such I guess). The industry seems to be mostly in gestation, such as this US provider merely noting great enthusiasm for it's "Halo" program in partnership with OEM only atm..
witricity.com
As Mercedes UK brochure says only 11kw possible, as does reply you received, it would be interesting what source dealer was getting information of that 22kw was imminent for your build or was it just hype based on initial internal impercise media releases.
For the car industry in general AC seems less concern than it used to be, with DC speed being promoted more, however AC home charging makes EV ownership more attractive especially with the DC charging queues and pricing growing!
Another remote future option might be retrofit wireless charging pad. Agreed standards last time I checked went up to 11kw though some pad tests have been successfully working at 40kw (via splicing into the DC system or such I guess). The industry seems to be mostly in gestation, such as this US provider merely noting great enthusiasm for it's "Halo" program in partnership with OEM only atm..

I Want Wireless Charging Now
A few months ago, we announced our WiTricity Halo™ upgrade program – and we’ve gotten a LOT of feedback from EV owners who want it now. We’re excited by the enthusiasm we’ve generated and love learning why wireless charging is so important to EV owners. Here’s one recent EV convert’s story. From...

As Mercedes UK brochure says only 11kw possible, as does reply you received, it would be interesting what source dealer was getting information of that 22kw was imminent for your build or was it just hype based on initial internal impercise media releases.
For the car industry in general AC seems less concern than it used to be, with DC speed being promoted more, however AC home charging makes EV ownership more attractive especially with the DC charging queues and pricing growing!