Hybrid Office Web Apps
We currently have to maintain on-prem OWA server(s) to handle on-prem document previews (even in new Hybrid search), and of course in-browser document editing/viewing. This experience will undoubtedly become fragmented from Office Online as MS adds features to the cloud platform.
I would really like to leverage the Office 365 Online apps to preview/view/edit documents hosted on-prem. This is really the last piece of the hybrid puzzle for us.
Why would it be fragmented unless they intentionally do so? Its the same product, just on Microsoft's DC. Fragmentation or stopping sale of product will just mean people will shift to Google docs. Hell I know I would rather shift to a free product.
I would prefer it be a simple service app which runs on an app server just like all other dam SharePoint services. Simple consistency would be better.
Mats Eriksson commented
Yes that would make my life a little easier as well, getting rid of the on-prem servers. So I agree!