It is kinda lame that you need inv space for a linkpearl, but a link shell is defenantly worth it if you get one that has what you looking for.
In EQ my guild was powerful and high level, but we were still honourable and respectful and we didn't let just anyone in. It got to the point where I couldn't stand grouping because you would just get idiots, but grouping, or more often raiding with my guild was all I would do. I wish my guild had formed in FFXI, but there was just to many other games that caught peoples attention.
Just watch out for drama, it happens, two people start arguing in chat. If this happens, don't step into it, if you try to be nuetral they will only think you are backing the other guy. Once one person steps in, another will step in to even the scales, and pretty soon you have everyone yelling. Let the leader or officer type (whatever they are called in FFXI) deal with it, if they have to they will do some kicking, and if you step into the fray, you may find a foot shaped mark on your *** too.