Determine roadmap for this module

Problem/Motivation

Based on the feedback from #3159888-5: Roadmap to 1.0 ? → , should we consider this module deprecated, and note it on the project page? Or, when compared to Entity Group Field → , are there any reasons to keep this module going? Any pros/cons we might document?

Proposed resolution

If there is no reason to keep this going in light of other offerings, perhaps its time to mark this module unsupported and obsolete.

Remaining tasks

Offer alternatives and make a case for this module, otherwise, mark the project unsupported and obsolete, leaving a note on the project page pointing folks to the alternative selected.