Feature Request: support recurrencies based on scheduled/wait instead of due date

[Zocker1999NET]

There are tasks, were it is important, that they are done (sometimes also in a timely manner), but not exactly on a specific due date (or where that is not a hard deadline). And sometimes these are recurrent.

In general, I have a clear separation between "hard" due dates, which must not be missed (under normal circumstances), and between "soft" due dates, where missing it by a little bit is not a problem by itself, but e.g. just shifts other stuff. That way, it is easier for me to keep "hard" due dates.

With the current recurrent task support, I am required to use due just for technical reasons. So it would be helpful for me if the recurrent tasks could be based of other dates like scheduled or wait.

One possibility to implement this would be to allow users to specify which is the reference date, like recurOn:wait. With that, the implementation could easily be extended to even use dates stored in UDAs.

I am aware that a plugin could possibly replace this functionality in probably good enough. So feel free to close if this feature is not feasible for you to be implemented into TW’s core.

Also, I see following issues which might overlap with mine: #1318