Sounds like we'd have a new experimental (read, bugged) feature that could be abusable as fuck. Better is to hire a few more GMs so players can get help ideally at all times.
It will not be a new feature, it will be a slightly improved version of a feature that we already have, and there is absolutely no way of abusing it.
And as for GMs... try and summon a GM to fix your broken limbs, quickly teleport you to the respawn point, or help you drop your loot on the floor, and see what happens. Plus, more GMs means nothing other than even more GM abuse; if anything, we should
reduce the number of game masters, but that's a subject for another discussion.