Sad to hear about later dates for a R5_II, but it's great to get a "substantial" (hopefully) R5 firmware update soon.
Many things have been mentioned as possible in that update. I hope that they include a front/back (or full 3D) AF limit as well as a motion trigger so that you can have a "photo trap" to video things that infrequently appear in a fixed area (eg. near a food feeder). I'd like to see "aperture bracketing" added. Current filename ending #s auto-wrap to 0 every 10,000 shots (AFAIK still) and I find that really annoying and hope it could be expanded to more than 4 ending digits.
Agree with all of that. Aperture-bracketing and shutter-bracketing would both be very useful.
It would also be incredibly useful to be able to set near and far points and constrain the camera to only focus within that zone. That would eliminate the possibility of the focus jumping unintentionally onto the background with BIF shots, and would also act as a focus limiter for stacking macro shots.
Samsung had something using a similar principle to your "photo trap" on the NX1 - a camera that was way ahead of its time. It's such a shame that Samsung deserted the camera market and abandoned their customers, as they could have provided a major challenge to Canon, Nikon, Sony etc, and pushed the envelope on development.