Maybe I'm just playing wrong, but it feels like random viability doesn't exist in the later stages at all.
Love the game, just unlocked all of the collectibles and I have 416/448 silver ranked in tier 1 so far.
I play games like POE2 where there are definitely "better" builds, but you can really make any build viable to the point where some content creators out there have random wheels they spin to pick their builds and get to endgame.
I feel like thats true up through the 60-80 range in HMD, then it feels like you just slam into a brick wall unless you pre-built a meta team or lucked into one with RNG.
I'd love it if you could just do the random flyers and as long as you were smart about your relics and dude allocation, you could always make it to the end somehow.