In GTD, a Next action is an action that you have decided to do and which is perfectly possible to consider doing now. This means that even the tasks on the Today list are GTD Next actions until they have been completed, and should be included on the Next list. This would be GTD.

Currently the starred Next actions are hidden from the Next list, which makes the Next list incomplete. As a user you then have to alter between the two lists (and use your memory) to see (and remember) your Next actions, which makes it very troublesome to get an overview, and perhaps even more importantly it makes it troublesome to adjust the tentative selection of tasks you had aimed at some stage to perhaps be able to complete today.

It is also a "formal violation" of GTD's core principles, if that matters. GTD is based on situational decisions being made based on Context, Time, Energy and Priority - not an any fixed plan for what you are going to do on any particular day, not even today, as those decision factors can change rapidly, and new tasks and circumstances can enter the picture, and you may even want to remove the star when you realize you will not do this task today after all. (It would be more appropriate to think of the Today list as a view of "flagged" actions from other lists - a GTD "white index card" - than as a separate list of tasks.)

So please reconsider.

And, on a more humorous side note, I promise it would also look very nice and decorative to have a few of those nice yellow stars on the Next list :-)))