Maybe they can make new emotes for it, to discourage jumping.

Player 1 'uses Jump..for the 80th time' Player 2 uses "Ankle kick" /emote and player 1 falls on their ass, disabling jumping for 10 minutes per need to recover.

Its silly and never would happen, but amuses me anyways.

Environmental situations that discourage and encourage jumping would be nice. Pitfalls that you need to jump to get over, but low hanging ceilings that if you jump into will damage your character. Perhaps the Crystal Tower can have gravity defying rooms, if you jump you float up into the walls, having to find alternate ways back down to your party or return to the entrance.