Issue #2930 refers to customizing the list itself.
Issue #4893 is a request to be able to set the default value within the predefined list.
While issue #2930 would imply implementing the other (how could you possibly have a fixed default on a custom list?), the converse is not necessarily true. I might hope that this issue could be kept separate, as I would expect allowing the default to be changed would easier in terms of implementation and design issues than #2930. Please consider reopening this issue (and fixing the misspelling in the title!).