I appreciate the effort made to give fans a chance before other, but this was the worst experience I've had with buying a ticket or anything else online for that matter. I had payment taken three times in my account for one ticket in the pre-sale, before any money was meant to be taken from any account according to the information given in the News section.
In the end, I "won" a ticket, but even after I received my confirmation email at 4 in the morning, money was still being held from me and another payment was taken out, bringing the total to about £260 being made unavailable for a £65 transaction.
I'm lucky I had the funds available at the time, because I doubt they'd have taken the payment if they'd sunk me so far into an overdraft.
I like the idea of stopping new memberships being created during a presale, but that seems a little redundant, seeing how many touts will have made accounts by now. But that could be remedied with a verification question a Muser would likely know the answer to, as mentioned above.
As for having this pre-sale as a lottery, I think that was the best way to do it, as a first come first serve service is hardly fair on fans without access to the internet at the time it starts.
That is a very interesting idea. Unfortunately.