I may have posted this before or had a former GM pose it during a summit? Anyway, though likely already suggested, it would be an amazing enhancement to allow fellow guild mates the abilty to attack your dungeon for fun. Talk about a terrific training / team building tool!
It could be a third icon on the My Dungon screen called "Guild Challenge", "My Guild", whatever, or another tab under the current "Season of" icon. Maybe the easiest option would be to add an "attack" button on the Social tab next to each guild mate's stats?
This action could either cost x stamina (no reward other than bragging rights), a new currency you earn from pvp'ing or can be purchased in the Honor Shop. Free would be amazing.
This would be huge win in so many ways.
GM - The Underworld Titans