Merge SSAS Tabular into the Relational Engine

Ok, so this is somewhat radical but if the engine teams want a challenge 🙂 ... The relational engine and tabular/power pivot all use in-memory tech. Tabular is basically a relational model with some computed columns (DAX) so, as a DW implementer, why am I having to land my data in the RDBMS and then re-process it into another in-memory store just because it talks a different language and protocol? It would be a big thing to be able to point an reporting tool e.g. Excel, Power BI (and yes, other vendors visualisation tools) straight at the relational db and get a SASS like experience. To be able to query the same store with either T-SQL or DAX (and MDX please) and get the latest loaded data without waiting for another processing step could be a game changer.