The increasing gap between players and bosses.

I'm sure a lot of people would be pissed/ragequit if their 24%+ equips were suddenly downraded to, say, a 5% or 10% cap. That'd be a bad business move.

Nexon could, however, modify the way that potential affects damage. Same thing, only going around it.

The current way it is: 0% str? Okay, you deal uhh 50k damage. And 300% str? okay, you deal 700k damage.
Just making up numbers.

The 300% str in this case, increases your damage more than tenfold. 14 times exactly. You'd need an expedition of 14 unfunded people to match the damage.

What they should do is change it to something more old school, make 300% stat just triple your damage. You'll go from 50k to 150k. You're still as strong as 3 players, that's nice!

This is really what they should have done with potential in the first place.

After doing that, they just need to stop making up stupidly high numbers (HURRR 50 MILLION CAP) and focus on making the gameplay interesting and a challenge, where players must cooperate and you know, all that stuff that makes MMORPGS actually good.

Sure, that works too. It would essentially be the nerf I advocate in a nicer dress.