Doubtlessly it is a convenient tool, but it has never happened that I was able to go to a place I’ve never been at before. Also, the maximum amount of people I can take along besides myself while teleporting is 10 people plus their hand luggage.
I also have investigated the limit of my own loading capacity, so at the most I would only take 5 additional people and hand luggage along.
Maa, since I can teleport the members of our party there is no inconvenience with that. Given that the share entering the magic bag has no effect in my case, it’s not a problem either.