Currently there are a number of mobs that "block" PCs from going in a given direction. Guild guards, cabal outer guardians, and the Inn of the Eternal Star guardians. In order to get past them the PC must attack and kill them.

It seems unrealistic that a mob (which is often much less powerful than the PC) can "block" him/her without resorting to blows. So I propose the following:

The first time a PC tries to move in a direction being blocked the mob does the standard "block" thing but with a warning. Maybe it frowns threateningly at you or says a verbal warning. The second time the PC tries to walk in that direction (without having first left the room) the guardian mob attacks him/her (while still blocking movement and fleeing in the given direction).

One consequence of this is that a good-aligned PC would gain the ability to get past a neutral guardian mob without having to actually attack it. The mob would attack the PC instead. Same result as if the PC had attacked the mob, but different RP implications.