Allow world creators to choose where portals can and can't be dropped. This would help prevent "trolling" in public instances where someone might be forced into a portal against their will, some game worlds may have the player flying forward for example so they are unable to react fast enough or unable to act if a 2nd user places a portal in their path.
Right now the only options we have is entire world allows a portal or the entire world prevents portal dropping. A middle ground between these 2 extremes would be appreciated where a creator could have a designated area where portals can be dropped. Outside that and it would function the same as "too close to spawn".
As a world creator I don't want to remove the players choice of dropping portals but I would like some control over it to prevent unpleasant experiences for users visiting the world, as too many occurences like this can have a detrimental effect on public perception of a world.