Enable open all file types
Currently OneDrive for Android has an artifical limit on what files you can open. It would be very useful if that block was removed so that any file can be opened as long as there is an app installed that supports that file extension.
For example, currently you cannot open *.kbdx files even though you have keepassdroid (http://www.keepassdroid.com/) installed that handles that file extension. keepassdroid is open source so you can check its manifest (https://github.com/bpellin/keepassdroid/blob/master/AndroidManifest.xml) to see that it properly registers to handle *.kbdx files and you can verify that it works by opening such a file from for example Google Drive or any file manager that supports local files.
André Bloem commented
We really need this function!
This is exactly the reason I keep dropbox around. OneDrive simply cannot fully replace it and misses basic functionality while adding, in my opinion, nonsense features.