Thanks for writing this out. IEO is not in anyway perfect but it is far better than ICO with what I have experienced with both. No exchange will hold IEO for scam project on their platform and the possibility of immediate liquidity is also a big advantage.
the fact is that new projects are now starting to conduct IEO on new exchanges that have no reputation. and I think there may be some collusion
The IEO does have many advantages from ICO. even more so when the IEO is done on a large exchanger like binance, or bittrex. this can be ascertained that the project is truly promising. unfortunately now investors may still want to see developments from the IEO.