From the perspective of solving the problems that the technology needs to have solved, I think the DPOS system is the best thing out there. From the perspective of governance and long term behavior of the system, this is still a very early experiment. We have no idea how it is going to develop over time as the whole ecosystem grows.
The consuls in Rome always had power because they often were the biggest, baddest generals/warlords at the time or else they were the yes men for politically powerful senators. But of course, the Roman system provides great lessons.
And in the end, the voter also needs to decide how to yield the power of the ballot box. I tend to favor the trustee model (give the leaders some space to operate and let them do their thing, then decide after a period of time whether it's been good) over the representative model (leaders always checking with people, taking the pulse, doing what's politically popular), though some blend of the two is ideal.
Or you can say, fuck it, what we really need is a benevolent dictator. If he's a sonofabitch, we fork that shite!