Well, one thing that we put a lot of focus on was performance. In order to test that, I had a dataset of 4.66 million documents (IMDB data set, if you care) as well as two indexes defined.
The results for RavenDB 2.0 (drum roll):
Loading 4.66 millions records in 44 minutes. Average rate of less then half a millisecond per document.
But wait, what about the indexes? Well, RavenDB index stuff as they come, and as we were inserting the documents, they were indexed along the way. That meant that 11 seconds after we were done putting 4.66 millions documents to RavenDB, we were done indexing (across all indexes).
Pretty nice perf, even if I say so myself.