A few ideas I had about adding depth to the game.

First, crafting. I feel like they aren't really used right now, aside from relic weapon quests. I'm curious why something like, max level abilities weren't added for each craft? Maybe an alchemist at level 50 could dye gear, not everyone on their own. You would need to interact with other players to get things you wanted. The same goes for endgame gear. Why not have almost everything come from mats? 800 tombs of mythology gets you a material that a level 50 blacksmith can turn into your Valor Surcoat ect.. Or an armorer needed to add material slots to gear. It would make each class seem unique imo.

Also, max level class skills. I really like the cross class skills, but there needs to be more of them, and more significant ones as well. It would be nice to add some level 50 conjurer skills to say a blackmage. That would add some significance to having conj at 50 while playing another class.