Cardano is definitely a coin to hodl but it's not easy to use due to it being Haskell. Therefore it's not going to have the adoption of NEO, Qtum or NULS. It's more about the financial markets, like Ripple or Stellar. Focused on specific challenges, specific markets etc. Or that's what I've gleaned from research.

Fantastic portfolio though. Very jealous. Kudos on it.