Well, I did figure out how to solve the problem of “How do you buff barriers, without triggering the problems of DoubleBarrier”.
Turns out, all you need to do is make Orisa and Sigma weaker at close range.
Then speedboosted Deathball and Dive just have to get into close range and walk through the barriers.
Rather than melting through a bunch of barriers.
Could even make it so Discord goes through barriers, and you can’t cleanse Discord.