As you most likely guessed, I would be interested in it, but as I am purely a hobbyist who is interested in the RISC-V architecture I can't see me acquiring more than a few for experimentation.
However, it would be important milestone for the RISC-V platform to have an offering that is price comparable with the ESP32. Although I own a SiFive HiFive1 one board I will only ever own one due to the cost (US$59) and relatively low spec. The K210 is almost there... but not quite.
Also, one of the key things that the current range of low-cost ESP32 modules lack is an efficient LDO for working with battery solutions. The standard 'go-to' LDO of an AMS1117 has a uses ~10mA, but the standard ESP32 sleeps at 70uA, so 99% of the power is wasted when sleeping. When you want a battery or solar powered solution the option of 70mA when running, and 10mA when asleep is very poor compared to 60mA when running, and 0.1mA when asleep.
If a 32-bit RISC-V, with USB (either on-chip or a separate CH340g) was available in a form factor that is something like the link below, and I had some confidence in deep-sleep performance (1mA or hopefully much better) I would be very interested, it would be a viable option for my tinkering.
https://www.aliexpress.com/item/New-ESP32-Lite-V1-0-0-for-wifi-Module-bluetooth-board-based-ESP-32-esp-32/32841073426.html One problem I have had with the ESP32 boards is that their footprint changes every 6 months, so I can no longer easily get the boards I was using last year. If only from the outset somebody make room for a battery controller + JST connector, reset/boot switches, SD card, whatever, and freeze the pin-out and outline.
I would far rather pay a few cents more for a slightly larger PCB with more pins broken out (and maybe some do-not-populate parts) than save a few cents but have the footprint keep changing.
Would you be thinking of a controller package that I can work with at home? Or at that price point is the most economical package a must?