The Leagues has been nice so far. Some things I've noticed/are still not working properly:
1. Berserker relic is still not applying damage boost with ranged and magic styles.
2. Make Kharedst memoirs not alchable and reclaimable from the Lost item manager. (Why can it be alched lmao?)
3. Add a cooldown timer of Undying Retribution relic.
4. Autocast delay of magic spells could be removed in the leagues when Superior sorcerer relic is enabled. It is very annoying.
5. Even more boosted drop rates would be great for future leagues: going 50 dry in a raid in a temporary game mode is just stupid.
6. Boost slayer superior NPC rates for leagues? They seem very rare.
7. Menaphite thugs give less GP when picpocketing (around 1200) vs Guards give 2000. This should be changed so Menaphite thugs give more.
8. Add Ghommal somewhere near Paul at Kourend. Currently, you can complete Combat Achievements but can not claim the rewards. In OSRS leagues they also had him in Lumbridge.
I will update this list if I came up with more.
EDIT:
9. Remove point cap in ToA because the chance of rares does not go up after around 600-700 ToA level. Not sure exactly how it all works but at least my plugin caps at 24% unique chance on a solo.
10. Auto completion of 50m Duel win diary task.
11. Buff egg nest chance when woodcutting (at least for league players); they seem very rare and the 5 egg step being a medium diary step is pretty ridiculous
EDIT2:
12. Giants foundry reputation is not getting the 5x mupliplier (tested it out on main game with same bars and it seemed very off).
13. Make knock out menaphite tasks count using trickster relic. No reason to knock them out with the relic at all.