KaeYoss: Thanks, you said it for me, that's EXACTLY what I meant. Sure, limited slots hurts you while adventuring. But when I want to go home and make a statue, I pull out my handy Amulet of Craft (sculpting) +10, which only cost me 2000, and suddenly I'm a master. I then put on my Amulet of Perform +10, walk down to the local tavern, and play like a master Bard. Then, I want to research a new spell, so on goes the Amulet of Spellcraft +10! It's not like I need more than one of these skills at any one time, and by getting a large collection I never need a high INT again, and who cares about whether it's a class skill?
I also had a Fighter ask for an item with +10 to Hide, Move Silently, Open Locks, etc. for 4000 per skill. After all, if you've got 200,000 in assets at level 15, this shouldn't be a problem, right? Of course, it would have made Rogues useless.