This platform will not be an exchange, because not CoinChango offers coin but normal people. The main benefit, adapting more altcoins, each person defines his price, and transaction fees of 0,50 €. On current exchange rates, I examined most of them, there are some tricks and I couldn't find anything with less than 5 € per Transaction, every one is volume based and if you move around from coin to coin this will hurt one time. How tricks works... Let me explain. For example a exchange company changed 10 Lisk to 30 Nav Coins, so Exchange Rate was at time 1 Lisk is 3 Nav right? You offered 10 Lisk and get 30 Nav coins. Now 2h later where Navcoin will be more valuable then lisk, so now you get 1 Lisk for 2 Nav. This exchange is not possible because coins will be removed temporary. I hit in this more times and noticed this during a long analysis.
Before you exchange on a service take a look at that rate, the rates are not almost correct + volume based fee. I changed BTC in value of 1000 € to nav coin, 80 Nav coins less then I should really get. So in 1000 transaction I almost lost 80 € (at that time).
Why do I started this project?
It is not a project to became rich or steal people around there. I can reduce transaction fees to a minimum. A short example...
If you want to change BTC in LISK, you offer your BTC and select how much LISk you want. Some one will go with your offer and accept this.
So first the person with the minimum network fee will deposit his coins on CoinChango, in this example this would be LISK, because of 0,60 Cent per Transaction fee of network. So Lisk party will send his coins plus 1 additional fee of 0,60 cent in LISK. The BTC party now can send coins "directly" to LISK party. If the right amount was send to LISK party all LISK coins will send to BTC Party.
That will reduce the costs in general.
I invested much time in this project to calculate and distinguish how transactions would be efficient.
I hope this example could help you.