While you are here: you've funded a few startups in the space, including skysheet (http://www.skysheet.com/) and fivetran (http://fivetran.com/). Are they targeting this "hybrid" or are you thinking of something completely different?
We (Fivetran) connect to databases but don't support editing, our product is for analysis. Our users data comes from production SQL databases and cloud services, so editing wouldn't really make sense.