I have more than 5.8k markers for members alone, and then several other categories with 200+ markers (and growing).
I started with removing the new side bar since it wasn't doing anything useful for me, and I believe it made the experience of opening the map quite painful.
The issue that I have currently is that usually the map doesn't display all the markers, so you need to force the refresh of the information and reload the page several times until you see everything. I know how to do it and what should be there, but a member of the community might simply access it and see just a small part of the markers. It would be great if we could choose which marker's category should be active by default and which should only show the markers after the member activates the respective radio button.
Another huge risk is that today, there's no option to export the markers... so if you come up to a problem with the database or the application, you may simply lose all the markers that you uploaded with so much work... I already suggested to add this functionality to the application, since the import is available but not the export option.
Hope it helps.
Thanks!
PS - just to clarify, I love the application, but I just wish it could have a few more options to make it more powerful and easier to use