Board Thread:Suggestions forum/@comment-12593001-20150507204738/@comment-26073467-20150507224219

Becuase:

A: the ring portal is an entity

B: it has to fit with blocks, as well as be able to change position to the side. it would have to be a 2×2×2 area.

C: because it is circular, it would need to have somewhere to fill the square it's inscribed in. This limits design.