I have my teleportation buttons bound to my mouse, and sometimes I press the button for setting a mark when I'd want to teleport to an existing mark. It might also be a problem for people who click the buttons under the in-game compass, and even for people who use their keyboards for that, although keyboard buttons are usually larger than the in-game buttons or mouse thumb buttons, especially if you have twelve like me. So, we've reached my point: I think we should have a prompt asking if we want to set a new mark if we already have one set somewhere. This could be turned off in the options, and there would be a checkbox in the prompt, like "Do not show this again." I see no downside to this. Thoughts?
