MicrosoftI reached out to support on this issue and it looks bleak.
I checked the roadmap (you can visit the site here: https://office.com/roadmap) and filtered out SharePoint that is in development or rolling out but I was not able to find any. We are very interested to know what features you would like for all of our products and you can post your ideas here: https://office365.uservoice.com/. Office 365 User Voice is where we ask feedback from our customers. You can post your ideas here and other customers that want the same feature can vote up your idea. Developers can then include the most wanted feature in future updates.
I manually generated a searchable PDF from a scan and it works great once uploaded. The only other option I've run across is paying for a separate service and building the plumbing to SharePoint.
