Since WotC forums are about to be down for a week, it seems like this is the best place to bring up this discussion?
The new FAQ has made the change to LOS through beveled corners official...
Quote:
Q: Can you clarify how line of sight and cover are determined?
A: ...
Line of sight exists if the attacking player can trace a line from any part of the attacker's space to any part of the defender's space without crossing or touching a wall. This means that a traced line doesn't provide line of sight if it even nicks the corner or runs along the edge of a wall. (Note, a wall square with a beveled corner is treated just like a normal wall that extends to the corner. Tracing line of sight through the small cut off area is not allowed.)
On Teth Monastery, there are two spots on the right edge of the map where four squares (divided into two 1x2 square alcoves, one at the top, one at the bottom) are accessible only through a double-beveled corner. In other words, while it's possible to move through the gap created by the bevels, it's impossible (under the new FAQ) to attack through the same gap, because there is no LOS.
So on Teth Monastery, it is possible to stash a commander or other survival-critical piece in a way that it cannot be approached (because it's blocking the gap) nor attacked (because a LOS cannot be drawn through the gap.
The only exception might be 'area of effect' powers which count range, but do not require LOS. Would an ability like Kohoun Infestation be able to effect a target that is hiding in one of these alcoves?
Whether it can or not, is the fact that it's possible to place any medium/small figures on this map in such a way that they are effectively immune to any sort of normal attack without any special squad or figure requirements enough reason to remove the map from DCI play?