Other implementations

Hey @eparejatobes, what do you think about having "implementations" (don't know how to call it), like we have for Titan, but for some other backends?
- generic [blueprints](https://github.com/tinkerpop/blueprints) (or even [blueprints-scala](https://github.com/anvie/blueprints-scala)?)
- [gremlin-scala](https://github.com/mpollmeier/gremlin-scala) — does it make any sence?
- [scala-graph](https://github.com/scala-graph/scala-graph) — just for fun and simple examples?
- [Neo4j](https://github.com/neo4j/neo4j) (may be useful for bio4j?) or just use [blueprints](https://github.com/tinkerpop/blueprints/wiki/Neo4j-Implementation) for that?
- [OrientDB](https://github.com/orientechnologies/orientdb)? (just to mention, I have no idea about it)

How do you think, which of them could be useful?