Limit a field to entries by entry type Is it possible to have an "entries" field but only allow selection to entries of a specific "entry type" within craft?

I'm trying to use entry types as a sort of way to enable interfaces with chunks of content. Requiring specific fields for one type of content and different fields for another type of content.

I realize I could create many channels and accomplish the same thing, but these data structures are similar in a lot of respects with only minor differences (which are important depending on the context they are going to be rendered). So I would prefer to have an overarching channel with several types.
Probably too late for you, OP, but the Entries Subset plugin for Craft 3 lets you do this and more.