For what it’s worth, the Big Balance Update was never intended to level the playing field - from SGG’s own words, it is intended to give them design room for new heroes without having to increase the effect percentages to extremes.
Thing is, it’s still just obfuscation - smoke and mirrors - to conceal the power creep.
Next heroes they design will have, let’s say, 230% damage to all at fast. However, according to the new design philosophy, where they’re going to put more power into base stats, - they will also have about 15% more attack than the previous generation of heroes. In practice, it will result in the same numbers as a 270% to all would do in the previous (current) design philosophy - with the exception that newer heroes also have +15% defense and HP.
The new, post-Big-Balance-Update, hero design is intended to reduce new hero effectiveness against their own tier/generation of heroes, while keeping them vastly overpowered compared to anything from a year+ ago. It’s a masterpiece of predatory design.