At least on IMPD, we do address it via training. Since making sergeant, I've been on two situations where the suspect had just fired shots at someone. One was contained and we were just going to hold for SWAT. The other was in the open and we were going to do a take down. In both situations I designated one officer to be the only one giving voice commands. It reduces the confusion on the other end, and it also frees up the other officers mental tasking to do other things. If I'm running the show, I'm never going to be the talker since talking and listening takes up more computing power then you'd think.
I'd also set the default verbal command to "don't move" since it applies in basically any situation, once things slow down and the person is compliant you can get into specifics of disarming them, moving them, etc.
The old saying KISS, keep it simple stupid. I’m glad to here this about IMPD.