For me it would be important to say "Sort by (none)" in Filter views and the documents are ordered in the way I arranged them manually in the Tree view.
This should also work in the Tree view, where I can sort my documents ascending or descending, only to recognize, that my original arrangement is gone for ever.
As an Example please see the behaviour of the Task list in Outlook.
The last days I reviewed MyInfo and was more than lucky to find your tool (after trying out 10-20 other). But now, after filling it with tons of data, I recognized, that not having that feature, would be a no-go for me. How much effort would it be to realize this?
Thanks,
Thomas