I'm opening a new feature request to point to a patch that was included comment #3 in this issue:
#305199: Markers are dead, control is gone - part II

I'm marking it postponed, maybe to be looked at in the future.

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ankur’s picture

ankur commented
Status: Postponed » Closed (won't fix)

Closing due to lack of continued interest. This is definitely doable with custom code and custom theme code (and perhaps with some configuration at this point).