I think, this will be more confusing than helpful imo, as people will start to wrongly assume that this limits frame-rate.
I like the way spine solves it better, for spine all animations are also running at infinite framerate, but they also display frames instead of seconds in the timeline to be in line with traditional animation, animation teaching and rescourcess like "the animator's survival kit".
They have this timeline menu:
the timeline FPS slider magnetizes to common rates like 12,24,30,60 and changes the playback speed so the markers match up with the selected FPS, but it doesn't change the keyframes, markers or frames per second that are displayed when playing it back.
The timeline looks like this, marked by frames.