Immobile Pretenders

[Sheap]

One thing I haven't seen discussed much is the immobile pretenders, Monolith/Blood Fountain/etc. I am not sure if this is because they aren't as good, or because most discussion on how to use pretenders focuses on using them as SC's and the immobile pretenders aren't much use in that role.

That said, it does seem to me that they actually aren't that good. You have nearly zero combat potential, and you also have medium-high path cost, and you have nearly zero site-searching ability. The only advantage seems too be high dominion. But I do not see why I would take, for instance, a Monolith, instead of a Prince of Death which seems to be superior in basically every way.

Am I missing something?