If you haven't sold a lot of coins, you haven't made a fortune. It's not profit until you use the coins for something. The exchange rates might crash tomorrow.

Anyway, as I said, all this talk about who deserves what is tedious. I'm wondering if this system you propose is even possible. As you've noticed, you have to have a mechanism for destroying BTC converted into BCP. Your solution is to send the BTC into an invalid address. Can this be done? The default client won't do it, so you'd have to use a modified one. Would "vanilla" miners accept such transactions into the block chain? If not, you can't prevent double-spending. If yes, then the vanilla Bitcoin client could be modified to not accept such transfers, if enough people wanted to make life difficult for your new currency.