4) Stop loss orders: give users the option to define a point where they can buy or sell BTC for a limited loss, rather than further going into the red. Seriously.
5) Credit Cards: Allow verified and trusted users the option to purchase bitcoin with credit card with the specific warning the chargebacks would likely result in their account being frozen. Since verified and trusted users already have their information on file, it becomes difficult for individuals to successfully defraud MtGox with a chargeback without repercussion. For honest users, It would become SO MUCH EASIER to fund accounts.
I'm curious what other ideas you guys have. I'll add them in to the list
4) This will make the price crash even more, get a trading bot.
5) You have to have a merchant to accept them, probably high risk, and high risk have a 9% fee, +$1 per transaction with 10% rolling reserve for 6 months. You cant just walk into a bank and get a CC processor that will approve BTC.
They need to have a system set up that charges like $1 to withdrawal a certain amount and you get a phone call to confirm the transfer.