We all know Metagross needs enough speed to outspeed Arcanine, and other Metagross, so I assume 108-9 is something to go for, which is in that case, gets 1hko'd by Earthquake.
We also know that the most used set on Blaziken is 252 sp.atk, 4 Atk with Life orb, Fire/flamethrower - Hp grass - Superpower - Thunderpunch, which is in that case, won't have the chance to kill Dugtrio.
And yeah If trio gets unbanned, I wouldn't run metagross nor Blaziken just for the sake to not get trapped, I'll also have to run whirlwind on snorlax, and Shell hull on Chansey, which will waste 1 slot / recovery item that coulda save me from strong special sweepers.