Edit: I got confused about the beat/measure thing, because it compresses the timeline in timing mode.
I guess. I just don't think that your idea will fix anything. Dividing a song every 4 measures with bookmarks doesn't take that much time and your idea doesn't even solve your issue. If every white line is numbered, you still have to could the white lines. The numbers are meaningless in this case. If you're not using the numbers to find a multiple of anything, then there is no point in having the numbers there.
The christmas collab I'm working on, I had to divide the parts by 4 measures each. It didn't take me very long to count 1,2,3,4 bookmark. 1,2,3,4 bookmark. It probably takes less than 30 seconds longer than the length of the song itself. It would take less time than it would to divide a stanza number by 4.
I think what you want is an indicator every fourth stanza, not every stanza. I'm not sure I agree to this as there are many more important things they could add to the design tab, and aimod. Only a handful of people would ever find this useful unless perhaps there was an option to skip every four measures through a map with a keypress. I would fully support this if that was included, because it would add more functionality to the base idea that takes a small amount of time to do.
This is going offtopic, but really I feel I must bring up the non user friendly interface of the design tab. Precisely making adjustments in design tab wastes so much time and outside of checking the .osb, there's no way to check set parameters for scaling, coordinates, start, end positions. Doing anything every x anything in the design tab takes much longer than what you're requesting unless you know the code well, and how to use it (but that has to be done outside of the design tab). Design mode needs an overhaul if we're considering things that unnecessarily waste people's time.