I think making the UNO R4 WiFi minus the LEDS in a NANO size form factor would be a killer product. Replacing the LEDS with a single RGB would be nice, and if it HAS to be bigger, then ok, but the target should be NANO so we can use the same NANO adapter and carrier boards. Hopefully, all the other features could be kept.
Like
The Nano R4 board is the functional equivalent of the UNO R4 Minima rather than the UNO R4 WiFi. Due to the lack of a Wi-Fi radio, Nano R4 doesn't fulfill @sonofcy's request.
However, the fact that Arduino already decided it was worthwhile to make a Nano form factor board with the RA4M1, combined with the fact that the Nano RP2040 Connect and Nano 33 IoT boards have a Wi-Fi radio module, perhaps gives some hope that such a board might be created at some point. I am not involved in the hardware development work so I don't have any special insight into the subject.
Is there a Nano board with 5V logic and WIFI?
No official board at least. I also don't know of a 3rd party board in the Nano form factor, but it is possible one exists.