What are the upcoming cryptocurrency ICO's with greatest potential?
None. ICOs are made to take the money out of uneducated investors.
There are few ICOs that have potential but I won't tell you and you should never listen any ICO recommendation.
When someone tells you to invest, it's already too late.
I regret but I am nearly as pessimistic as Superresistant.
Not about money taking, but about the fact that we have to be very carefull not to be credulous when reading an advisor's post.
However, this forum is full of reliable people who will give valuable advice... so you'll certainly find the ICO you're looking for.