Hyperledger, Fork litecoin, pay for Hashgraph, get confused by Ethereum overkill or adopt NEM. depending on your business modal, you could go full NEM on Java, or simple Catapult which in the NEM in C++ Lets call it, NEM++. Thats my option anyway. I did look at Ardor, but found it is a fork on NXT, so left that one alone.
NEM++ is actually quite a good idea to reference "NEM 2.0". I think a lot of people are really looking forward to the future right now since the success of tomorrow is build today. And that is what NEM is doing right now.