The biggest advantages that I see are:
1) anonymity, due to zkSNARKS
2) fast transaction time and low fees
3) POW ASIC resistant policy
4) Currently has a low price and even if there are 1000 times more coins than bitcoin, I think that the price will go up
5) Continuous development
6) Open source project with a distributed team that is not strictly bound to the project
What do you thing that should also be stated?
Are there any advantages or disadvantages that I don't see?
What do you thing that makes a cryptocoin to have success?
Have a nice day!