So far 1.2b is a good fix. I still need to test a little more on MW3 with the dropshot and rapidfire both on (only played one game) but I had no problems when I played. The dropshot from the game I played seemed to be much better than the original 1.2 update, I think you fixed the small issue I explained where it would drop you again when you don't want it to. I also haven't gotten the trigger problem to occur again, and I've used just the rapidfire on both Mass Effect 3 and Gotham City Imposters without ever having to "reset" the rapidfire by tapping the mod switch.
Unless anyone else has/notices any small bugs such as spliffs problem (which never happened to me), I think it's just about ready to be officially released and out of beta testing =)