Right, but as said, I know the limits of wavetables since we use them in SDR, RADAR and LIDAR for different purposes. Regarding sound generation, these limits create a lot of artefacts, which in some cases are the reason for the "good" sound. Depends on the way you access the table and (pre)process a wave.
And yes, I know the microwave - I even tried to emulate it using also wave table synthesis:
At the moment, I am evaluating a new way of WTS, which is first possible with the current technology and available at a reasonable price. It requires some processing power and tricky resource management, but in some weeks I shall be able to present some results. Currently I am waiting for the new PCB. Since I plan a release also for B2C, it might be possible that there will be someting available in summer. Maybe as a companion to the Virus.