Semi Perma farming tool: Im not sure if this could even be done but i think it would be a interesting idea, having a repairable farming tool for the POW farm that works like the support tool all the time, but you only get the items not the exp from the farming. as for where it drops from it could be from a dungeon, or maybe have a recipe and have different components drop from different dungeons.
Macro Costumes: this is a pretty simple idea but again i don't know if it could be implemented, having a macro you could use in the hotbar to equip different sets in a hurry so you don't have to equip each individual piece