Well, if people want to play for hours at a time for 1 credit/hour, there's not much stopping them. At a lot of hours it would be possible to already get a credit from both tournaments with some luck. It matches more closely with other modes as well, since I could go ahead and play a round in Survivor or Deathmatch any time I want, while DT are only every other hour.
I don't really get the 'too many in one day' argument. You still have the exact same odds of winning a CR, right? All I really see is that the extremely dedicated players might win another DT or two per day. Is that extra couple thousand clints going to break the economy?
Seems I got it wrong, I thought he meant both Standard/Extended DT every hour. My bad.
More people will be playing DT, and more people will be playing tourneys. Perhaps a 30-40% increase in total players over the day. Which is enough to cause a significant change that can be felt in the market.
With DT every hour it's probably more advantageous to players to play DT all the time. Forget survivor, DM, ELO. DT is where the money is, there's going to be no reason at all to stop playing it. The main reason DT is held every other hour is so that players will actually play other modes.