Here's the deal with the turbo. You have 10 minute matches with 30 seconds per each persons turn. You have five rounds so at the most, the tournament lasts an hour. This would hurt speed decks because they only have 30 seconds per turn (you'd have to move fast to actually get the play within 30 seconds with all that drawing), it hurt decks that take a while to get going, and make it so you'd have to build a well balanced deck in order to win. All the other redemption rules apply.
We did this for fun at my college and it was a great time. You have to quick on your toes with this. This can get tense and funny at the same time when there are two minutes left with a score of 2-2.
Also as an option (we did this) was when the rounds were over, you'd set up a single elimination tournament at the end. It would extend the tourney a bit longer and in the end, you'd have people sitting around watching, making it like a sporting event with people cheering you on. You'd have to have a strong mental make up if people annoy you when they watch, but it's a lot of fun. Just thought I'd suggest it.
Bryan Hermann