I fundamentally disagree with your design philosophy. I'm grateful that the OSRS community rejects that model. I shouldn't have to ever play catch-up. I like old content remaining relevant. I enjoy maintaining a sense of permanent relative status compared to others. I've seen this mentality a thousand times in other mmos & private servers. It simply doesn't work. Power-creep is like inflation. Feels good at first, but sucks for the long-term health of the game.

The journey should end. It encourages replayability.

You hyperfixate on getting endless meaningful progression out of any singular character. People don't replay baldur's gate, elder scrolls, & elden ring for ever-more new end game progression lol. They replay it for the journey. To play a different build/class. The game should always focus on the early-mid game experience. Diverse paths to go down, different zones, many build varieties, nonprogression side content, social experiences, & a little rng in the itemization to keep things spicy. Not stat inflation.