Zelda should be in E Tier.Zelda is in the correct tier (top of bottom, bottom of mid) but could indeed drop a place or two. Ike isn't going anywhere. Bowser is going up if anywhere, and I think the only thing holding him back is a lack of skilled players. PT has some serious potential to go up. Nobody in C is likely to drop a tier.
The tiers seem pretty much right, which just a few minor adjustments in placing unless there is some groundbreaking new AT discovered.
Bowser could go up. I haven't seen much excellent Bowser play, but I see at least a decent amount of potential.
Pokemon Trainer should go up. Baton Passing is too good.
Ike is probably alright--maybe going down. His metagame has been at a standstill for a while, but he's still somewhat solid as a character.