I think the problem is political - and that leads to both technical and political problems. We came up with a largely political solution that should solve both.
We can't have a one way street of pulling everything interesting out of Solr for Lucene, or poaching, or expanding Lucene's domain while shrinking Solr's (just limit to "server stuff", etc). Lucene and Solr committers are headed down the road toward greater competition - but with this proposal, we said we'd rather work together instead. -Yonik
