Hmmm... interesting, but I think both a regular node as well as a masternode require you to actually run a node, aka keep a computer online or rent something to run it for you.
This never works out cost-wise for me as I don't usually invest enough to make it profitable enough.

Not like NEO or Ark where you have no costs or real effort involved to get the reward. I love these easy systems: they are like my crypto savings account that gives me interest