If ICO wasnt been plague by scammers acts ICO will way better than IEO, ICOs are programmed to run on the projects very own website and no any third party involvement at all so any fund raised will go directly to the dev or project team, no loss of funds to scam exchanges,after some successful IEO fund raise on some exchanges they dont bother to send the funds back to the project teams
If there is an opportunity for the scammers to make a lot of money in the name of initial coin offering and there is no still can't stop them creating their own ICO then how can we expect scammers will be stay away from this market.due to the customers exchanges take the advantages and making lot of money for themselves but reputed exchanges might keep the quality on the project they were promoting.