Rate My Team: Mega Froslass Mega Blaziken

Hi, just got into VGC a while back and this is my first time building a team.

I wanted to build a balance team that has answers into most of the teams I see on ladder while still having the firepower to hit back.

Froslass: main goal is weather control + veil for extra bulk. main answer for dragonite, garchomp, etc.

Sneasler: fake out support with threat into arch, floette, and kingambit, poison touch set to hopefully OHKO whimsicott with focus sash.

Sinistcha: imprison tech to counter trick room, as well as a good bring into rain.

Blaziken: main carry vs sand teams and the dual weather team that brings venusaur, also attempting to amend the lack of speed control on this team with speed boost.

Rotom-Wash: Answer for charizard/rain/sand teams and an immunity for EQ

Incineroar: Incineroar. good pivot with slow parting shot and intimidate support. Also helps with ghosts since I left out kingambit.

I think two obvious weaknesses are the lack of speed control and a weaker matchup into rain? But I'm not sure if this is correct. I'm thinking about whether I should swap incine for kingambit for better offence but the team is already pretty frail so I think I need the intimidate.

Looking for anything I might've missed or suggestions to make the team better!