So I just recently went on my alts, decent 2k on all of them, on one, I summoned pd, gunslinger, cupid and ronin. Very simple, gunslinger solos everything, able to get flames for level 80. Now I never tried hbm before on this account, and let me tell you.... I had no idea how broken gunslinger was.. Level 80 4 skill level and is able to basicaly solo J... Okay, back in the day J was the hardest one to many players, but now it can be soloed by many heroes....What is life. (TLDR: (Beginner) Gunslinger vs (HBM) J = Broken)
Yup, that's how the progression works. I'm pretty sure it's intentional also.
Every time a new hero came out, content was trivialized. GS is the new iteration of that. What we really could use though, is new content past AF.
One of my accounts rolled a Ghoulem on it's very first roll. That account dominated the early game.