You are underrating Mitchell IMO.
I agree. Even if Mitchell has had hot starts in his last two seasons and then fails to produce. He is a very effective player.
I will say if Holland becomes the 4C, then it's possible he's an upgrade over Mitchell. BUT, if Mitchell is then put on the wing as a 4RW, then he's an upgrade over Flynn.
Hudon-Holland-Mitchell can become a very solid 4th line. And yes, I want Hudon to move up in the line-up. But this is a place he can start and work his way up to the Top-9 and eventually the Top-6.