I would also like to see pulse dialing on at least the
SPA-3000's FXO port. Even living in modern day Japan, my home telephone service is pulse dial because NTT charges almost $4 per month for DTMF. Also, many of my clients are in Third World places where DTMF is still a dream.
The ability to accept pulses on the FXS ports of the other devices would be nice, but not as important IMO.