Needs touch friendly MS Office
It doesn't matter how it looks or how it runs, if people can't use Microsoft Office on it effectively then it's going to flop. Office is going to need some simplified interfaces for working on the go.
Also, there's definitely going to be a market for Office add-ins such as a Survey designer so that tablet-wielding survey takers can tally up trends on the go. I've lost count of the number of tablets that are gathering dust because people couldn't use them this way.