That's just what happens when you play on a sped up game mode... like 40x normie game mode or 6x gim.
The xp rate doesn't match the time it takes to unlock items.
If you actually want to unlock skilling gear prior to 99, I suggest playing on the Realism 2x xp game mode.
Aside from that, you haven't really provided any concrete reasons for making pearls more common.
Full outfit technically only takes 2 lucky clicks (1/15000), since 2 golden tench will exchange for enough pearls to buy the entire outfit.
Keep in mind, there is already a vote book perk for boosted pearls and a donator perk for additional pearls.
Not everyone has the time to invest in low-exp game modes ranging from 5x - 2x.
Getting 99 in any exp mode is easily achievable with enough time invested in it.
I SUPPORT the increase rate of moch pearls.
The outfit and cosmetics aren’t only beneficial for 99, it’s helpful for people attempting to achieve 200m or just want to gather all the skulking items - everyone has a different goal to achieve in this game.
I agree on 40x you will easily obtain max level before the outfit - that’s just the journey that person has chosen.
If this suggestion is accepted, I can’t see it hindering anything drastically other than possibly making the training method more popular.