See...there's a flaw there...I don't like grinding. Most people who quit FFXI did it because they don't want to grind anymore. It was fun the first few hundred hours but now it's old.
I do not understand this logic for someone who wants to buy an MMO. Every MMO has a grind in it, if you don't like grinding, you shouldn't be playing MMOs. I don't think anyone in their right mind would think that SE can push out enough guildleves for you to do infinitely - sure they can allow re-dos on all of them without the 48 cool down, how long before that gets boring. My advice to you, without meaning to sound like an ***, don't like grinding? stay away from MMOs.
Guildleves/quests are grind too. So far the only advantages of leves is getting money/eq and when the world is really camped they give you mobs that you don't need to fight other players for. I was getting better exp for a longer time by duoing.