I made a suggestion on the forums, but it was ignored as usual.

-Let the experience bonus for doing a guildhest for the first time apply to all characters, not just the first to run it.
-Provide double experience for the first dungeon, guildhest, and trial done that day.
-Provide players with their choice of gold or seals at the end of dungeons to incentive running them more.
-Random dungeon/guildhest option. When selected, it provides 25% more experience. At the end of the dungeon, it will ask you if you want to run another random dungeon/guildhest with that group.
-Have grand companies sell an item you can purchase with seals once a week that resets your current Gathering/Hunting/Crafting log tier for all classes