I'd like the teleport feature to be changed so that it requires the permission of the target. For example, "So-and-so would like to teleport to you." Then I can click Yes or No.
Lately, I've had a lot of trouble with low-level wizards porting to me in Dragonspyre, drawing an additional enemy, then fleeing. Sometimes I don't even have enough cards to finish the battle, and I have to waste a reshuffle treasure card. As an interim measure, I've disabled my teleport permission entirely, but that's not an ideal solution. I keep having to toggle it on and off for when I actually want company.
The fleeing thing is really problematic, and it's made worse by the fact that there's no corresponding dialog in the menu chat. So far I've ended up ignoring three players who did that to me because I was really angry and had no way to discuss the problem with them.