LI's in general but two things that really bug me repeatedly and so could easily be fixed without changing the whole LI set up
Removing IXP runes, and just making them a shared wallet currency. I've got hundreds if not thousands of the damned things.
Having to reforge them every 10 levels - Oh great I've got 7 quests to hand in, hand in 1 quest a LI needs reforging, ride off to find nearest Forge master, ride back, hand in next quest, another item needs reforging and so on.
Neither of these things serve any purpose apart from annoyance.
[SIZE=3][COLOR="#006400"]Wal's Army on Eldar - Walred (Champ), Walbert (Cappy), Walmur (RK), Walori (Guard), Walrandir (LM)[/COLOR][/SIZE]