I think its fine to make baseline Affliction more rot however their talents should be what helps them perform in M+. As it is right now everything is revolving around Malefic Rupture and you are even relying on it for both raids and M+ quite heavily.
My theory is that they are going to gut rapture and buff DoTs to try to get people too consider Sow the Seeds again for M+ but i don’t think it will work out that way.