Very interesting, thank you. There is a big opportunity for someone to re-imagine the power of Lotus Improv with a more intuitive touch interface for tablets. Perhaps it will be me, but I'd rather it be you than that it not happen.
Data analysis as a service could be a big market. Why do Google Analytics, Mint, my time-tracking service, my to-do list and every other online app I use implement their own, custom, proprietary versions of the table/sort/pivot UI for advanced use-cases? I'd rather they provided clean interfaces for easy things and allowed me to join all their data together into one data cube for serious reporting.