Although there are many good ideas out there, aren't you safer to invest in an ICO which already has a functioning and proven product? ROI is much more likely in this scenario
It depends really. Safer? - Yeah. More profitable? - Depends.
The thing about ICOs is that so many people fall into scams and that of course hurt the entire ICOs image on the outside world. Knowing how to identify legit ones is by far the most important part of it. If chosen right, you could get big % over your investment but that is extremely risky and i recommend only to people who know what they are doing.
That is why i consider best to educate yourself and invest in the ones you like their cause for now, starting low. That way you will know what you're doing in the future.