This one relates to the planned addition, sub-categories. Once they get implemented it would be nice to allow selection of categories to be shown when hotspots page is first being loaded. Options:
[ul]Show 'em all.
Show selected categories.
Save view (by a browser, not server, so a returning user will see what s/he wants to see)
etc.
[/ul]
One more addition would then be to let the admin define a color to each category & marker.