On the feature gap point - depends how you view (on paper vs reality). For example - On paper, DVD has big data support with spark, hive, impala etc but in reality there is no support for LDAP/Kerberos and push down processing so these connectors are pretty much useless. Even on relational databases, DVD chokes on moderate sized data sets. Hence I had mentioned earlier that its baffling to understand the product team's focus on adding new connectors with new DVD releases that look good on paper but not of much practical use. I hope they get fix what's already in the product before adding any more namesake features.

i think it will be interesting to see how DVD handles advanced analytics R scripts from a pushdown standpoint because there is no true push down for this in BI server too. If you have oracle advanced analytics license on oracle relational db then it might be ok but if you data sitting in a hadoop environment then you are out of luck. Unless, you move data from hadoop to oracle which defeats the purpose of having data in hadoop. In last years OOW, I saw a slide that DVD will be able to do function shipping for machine learning api's in R or SPARK. With the current pace of development, I dont think its happening any time soon!