Seems like the hype of IEO is not over yet. I doubt it will go away really soon but tbh even the most hyped projects on Binance doesn't get a great ROI (only x2 max).
I'd not join any IEO even though it is possible we'll get 10x return. The risk out weight the (potential) profits.
If you want to earn a high profit, the IEO is the best way for you to risk once because most good IEO projects get very high prices and you can see TOP as a coin with a price increase highest with profit x18. I think if you are an investor, you should try it once because the feeling of making a high profit will change your life in a very short time and very few people can do it.
The main problem is we need to know whether an IEO is good or not by doing researches. Not all IEO are good imho, and since IEO is becoming a trend of fundraising currently so I think there is a chance for those scammy project to do the same thing. What I do not like with IEO is that huge investors has the ability to manipulate the price. Overall, IEO does not give you guarantee of profit. The risk of losing some money is still exist so be wise in investing our money.