To me, i think it's a big market for this particular case. I've not seen any company that has a 16 cabs imprints technology yet and not to confuse with IR's solutions out there . Fractal , Helix and tube guys will be happy to find that they can play 16 different cabs into one cab.
I understand what you want but i think it’s complicated (don’t even know how the chain has to be to work) and really expensive. I assume many tube players won’t « waste » 2000€ just to have a Kemper Profiler (only for kemper imprints) plus the Kabinet/Kone.
The goal of those manufacturers is not to purpose a cab for « traditional » players.
They want to offer a new solution to move towards the « amp in the room » feeling. The message from modelers compagnies is : dear customers, you’ve trusted in us, you have followed us for many years and we’ve improved our modellers during all that time, today, we offer you another step to approach the real thing and to keep the unit versatility.
The main goal is to sell their modellers first too. A cabinet 400€ (+fee for the speaker manufacturer), a Stage/Head ; 1600/1700€.....
In Kemper case, the problem is that they have a cabinet on one side, you have to amplify and the imprint speaker integrated in the profiler itself. All the chain is splitted in three different units (or two with a powerhead/rack).
That choice is coherent and pretty convincing for the trademark when devices work all together.
The best/simplest way to obtain what you want would be to have a device that has the amplify unit (for modelers), the speaker « imprint » inside and the FRFR speaker to reproduce the simulated sound.
As said above, Line 6 has already commercialised that solution with the Powercab family. I don’t know if it works well with traditional amps, i think some owners having already a head have tested this but don’t know the result..... It has 12 speaker simulation and would probably be updated with more in the near futur.
At the end, it doesn’t seem to have attracted a lot of tube owners....