The main attraction behind PoSToken was "The World's First PoS Smart Contract Token" and it introduced new "PoS" standard for ether based tokens which some others are already using it. I don't think it's going to fade away!
Still, I don't get the POS concept in an ERC20 token. In an ethereum subfranchise, it's the ethereum blockchain that does all the muscle flexing and the management: hence the ether payments to send PoS tokens around.
As an ERC20 token, there is no economical value that entitles a POS holder to a POS reward. The POS holder does nothing, if not execute the smart contract routine to get some reward. This mere execution of the smart contract has no economical value, no collective benefit. He gets paid for nothing, and this partially explains current low value of POS token 1.0
In a real POS coin (
not an ethereum subordinate), coin holders are rewarded because they are maintaining the network by generating blocks. This is not the case in ERC20 POS token.
If we did go ahead and create our own blockchain (perhaps a clone of ethereum, but this time with POS), which
would not be a subordinate of ethereum, in
that case paying POS rewards makes sense, because the holder is actually doing something of economical value, ie maintaining the token's independant network.
Ether itself, if I understand correctly, is phasing out Proof-of-Work, to turn itself into a PoS token. If we want to have a unique advantage, we better move fast