With all the Guides (travel abilities) that the Hunter has been gaining, running out of slots has become a real problem.

I think a UI addition for travel (that could be used by all classes really) that integrates Milestones, Guides, etc all into one place (like a drop down menu icon or something) would be a great addition to the game. Perhaps it could also be used to help advertise the milestone and maps items one can purchase in the store (as a marketing excuse to prioritize the idea to development).

Hmmmmm, you could probably do something similar for mounts, so if you want to choose a another mount to show off, you don't need to go digging back into that long list of skills in the character panels. Again, a quick link to buying more mounts in the store could be placed here too.