For Master-level difficulty players.

Of course.

absolutely not, what potion would be so useful as to justify the perk investment?

what i really would like is a perk which removes all but one strongest effect(and maybe buffing it too). Cant be bothered to read through all that description stuff, boring. Keeping it simple is win.

it would be, i wont get it because i like figuring out what makes the best poisons/potions without the help from perks that remove all positive/negative (repsectivly) effects

I don't think it's worth the perk point.