If you have 300 item slots someone will say he wants 400 and than 500 ect.
Maybe your wish will come true i remember mindark was openly thinking about some kind of premium features you pay a monthly fee for and get in exchange more auction slots and storage slots - why not also more item slots on your avatar ? If we try to be honest nobody really ever need 200 slots but its so god damm convincing to carry all that stuff around. So yes, mindark should offer some kind of service to increase the item slots on our avatars. They do sell Item points for shops and apartments, why just stop here and not expanding this. I thought mindark loves our money and here are people who would like to threw it at them.
win win situation