I like the part where you run a mock-exchange and bash all other projects because you have sand in your vagina.
"THE BTC stock exchange" you have got to be smoking crack.
Give yourself a little time. After you cross the one year mark you start seeing things differently.
Provided, of course, you do ever get to be that old.
Here's a hint: MPEx is older than Bitcoinica. It saw Pirate rise and fall. It saw GLBSE go to shit. It saw MtGox die. All these things seemed like hot shit to Bitcoin's mayflies.
It's not just that it's older than you, or that it'll survive you, it's a lot more than that. Things you can't even imagine.
MPEx seems like the sort of project where the operator assumes technical competence and decent architecture is self-evident and will wow the marketplace, and then proceeds to vigorously blame people for their failure to appreciate the system - when it's more a case of the operator failing to understand (or give a rats arse about) people.
Hint: Your model will work nicely when autonomous software agents are starting Bitcoin businesses and need to IPO.