Update Sequences in REAL TIME

I just wanted to cast my vote for a change to the sequence settings (or at least for this option): If I enroll a contact to a sequence TODAY but set it to start, for example, on January 1, I would hope that any changes or edits I made to that sequence in the interim would be reflected in whatever that contact received beginning January 1. As I understand it, that's not the case. Because of this, I have to make dozens of "activities" a day for January 1 to add contacts to the newer, updated sequence. It would seem like choosing a static or fluid version of the sequence could be an option, at the very least (although ideally I'd like the platform to assume I always wanted the LATEST UPDATE to that particular sequence).