I don't understand why people would choose the 50% fee option
The old mtgox had an average daily volume of 50K BTC; if we suppose the same for the new god (likely much less) and an average fee of 0.30%, you would get a little less than 3% of your old credit back each year..and you will reach 20% in 7-8 years and 100% in 30 years!
I really hope the new investors have same great plans to relaunch the new exchange and help it grows to process 10x, 100x the old average daily volume