The redshirt thing really doesn't have an impact.With the new redshirt rules, there's the ink and the first five games. Not that a kid can't still pull the trigger and transfer, but it becomes a much bigger ordeal after that redshirt window passes.
It seems as if the days of singing day being the end of the suspense are over.
If a kid plays 4 games next year and decides he wants to transfer....he still has to sit the rest of the year and the entire 2020 season as well so he is better off just playing the whole 2019 season and then leaving...which is really no different than things have always been. The exception being if they can find a school (like org st) that hasn't started classes yet but that will be a tough find 4 games into the season.