It is possible to set default behavior for Features in the "Record dates" section of a workspace or workspace line, choosing between "Enter manually" and "Calculate from releases".
In the same settings on a workspace template, "Features" are not included as a record type for which this default can be set. This should be possible.
If this functionality was rolled out for workspace templates for every work item type except Features, I'm not sure why this is a "Futuer Consideration" idea as opposed to a Bug. Seems like Features were forgotten during dev. Lame on your part, Aha.