You can, but you could still create a workaround in game.
For example: At the end of the day, I'm going to look at the second of my last post of the day, take that mod the number of players remaining as we go into night in the order of the list in the OP, and target that player.
Scum could technically use that to narrow down the Hider, so it isn't as good as using a flavor-name based method, but most scumteams aren't going to bother doing it for every player to narrow the list. (I totally would though.)
So yeah, there's some merit to disallowing a flavor-based method, and maybe we should. But I think Hiders are toast soon enough in this setup that even with a method that would allow scum to narrow down the target, they wouldn't get it narrowed very much before the Hider is dead anyway. In which case even disallowing that seems irrelevant. If Hider hides behind the other scumteam, or whoever the Vig targets they die too remember.
But anyway, what do you think of the powerlevel of Hider + Tracker + Vig + Backup Vig?