I recently added waves, bnb and tron into my protofilo and this is not enough. I am interested in your suggestions, namely walton, steem and civic. Maybe i will reseach it further.
I also want to find a coin that has a purpose as a payment processor, I see there utrust and monetha, both have a great team, what do you think?
I would suggest you to look at OMG - they are very close to ETH guys and they want to cover all of the asian unbanked population to process their payments. I think this is x100 type of projects.