APM graphs please

same as with metal produced, value killed etc.

I'd go with:

The number of unit commands given, not counting commands that are duplicates of the previous command (with the same unit selection) within the same 1s.

Eg. pressing stop with unit selected is 1 command
pressing stop 2x in 1s with same unit selected is 1 command
pressing stop with one unit selected, then pressing stop with a different unit selected, within a 1s window, is 2 commands.

Clicks and key presses that do not issue a command are not actions. Giving a command that is almost identical to an existing command to the same unit selection in the same short timeframe (eg. a move command to a location within 5 elmo of existing move command) are not actions.

That way you only get meaningful readout. The stuff starcraft players do to boost APM like rapidly clicking a rock are sad.

what if we dont bother?

Also what about changing states. I imagine this should be counted but some of this state stuff is a little fuzzy. Like adding and removing to autogroups mid game is something I do frequently enough and this isn't even sent to the server as far as I know. I am sure other people can com up with a bunch of other strange corner cases as well.

IMO input speed is the only thing that can be measured, so is the only thing that should be measured. Keypresses and clicks, including modkeys.

If some people have insane apm when measured like this but they don't get high elo? Well, yes then maybe they need to spend their clicks better - but they have them available and perhaps this input speed is what you want to know.

IIRC, the engine already tracks APM, and shows it in the default game end screen. I'm not sure which way the engine decided to resolve ambiguities.

In lieu of nothing, would it be possible/easy to have the default spring engine one implemented in some way?

Maybe just an extra tab on endgame stats that shows the apm, MC/m, mousemovment stuff that gets by the engine anyway.