I think it would be good to have a small beep or similar sound play when browsing the real time map page when a hit to the site is received.
This would be good for small sites where a developer is interested when someone visits, they could leave the tab open and listen out for the sound to alert them when a hit is received.
Of course this could be toggled on or off either by a small setting on the page or in the main settings area.
I look forward to hearing your thoughts!
Never use this plugin but maybe it could help :