The experience could be somewhat tamed by a lottery process.
Accept a token deposit for a week or two, and then draw from people contending for a given seat, then give them another week to pay the balance. Any unclaimed seats are put up at will call night-of-the-show. Limit the number of deposits taken from any given card to prevent “I’ll claim 30 seats and only buy 1” gaming of the lottery.
There’s probably some more complexity about it (if you want N seats together), but I think that would dramatically cut back on the frustration for “the tickets were only available for 14 seconds and the server was being DDOSed by scalper bots.”
Having to put down a deposit with no guarantee of a ticket also makes “buy All The Seats” scalping theoretically impossible and economically riskier. If there’s 5/1 contention for a ticket, you’d have to find a way to get 3 lottery slots for a better than even chance of getting it. If the deposit was $10, you’re spending $30 for the chance to buy a $50 ticket-- so if you can’t resell the ticket for at least $80, you lose. Under current policies, if you can sell that $50 ticket for $51, you’re ahead.