I suppose that ICOs in 2018 will move to a new level. The amount of project will be reduced, but the quality should be improved for sure. Moreover I guess that in 2018 ETH will share the place of the top ICO platform with NEM, NEO and other projects.
I agree, there will be more legt ICO. Scam and airdrop ICO will be worthless, not strong team will be abandoned, there will be regulation related to ICO in some countries. ICO investors will get benefit from the situation and bounty hunters will be selected.