From the start I've been kinda worried about Arcblocks.
Many people talk good about it, yet they have no product and are selling Erc-20 tokens.
They're supposed to be blockchain 3.0, but right now you will get tokens, which you must trade against the real product later..
when it's ready.. after the ICO.. of which they receive a lot of money..

I'm not spreading FUD, I'm just trying to give insights.
I think it's safer to invest in ICO's that either have an actual product ready.
Or have a very good plan, exposure and most importantly, a great team with experience.