FE7 Mode Switch

I was wondering if it was at all possible to have an FE8-like mode switch scenario.
So like, it switching from Eliwood to Hector mode between chapters so it can change the Lord who can seize, etc.
(The game does do this for Lyn -> Eliwood at the end of Chapter 10 somehow, so I was wondering if it could be done elsewhere.)

If the game already does it at some point, then yeah, probably. Give it a look, I’d say.