Glad it was entertaining for you! :D
There is a comment of me in the thread.
As long as nobody steps up and does something, yeah, you're stuck with it.
Does Zapy still map? If not, let's get him back.
No.
Because something in the difficulty algorithm got fixed, and many old scores have not had their pp value updated. It'll happen once the osu! database servers got some load to spare.
You can't use SpunOut with mania. So yes, most likely was just c&p. :p
And now -- 22 days after this question was asked -- nobody got even 700pp on the map. Yes, it might be overrated, but let's not prematurely come to conclusions.
It was never meant to work on an empty database. All it needed to do was to work on the official one without crashing, and with reasonable parallelization.
To be fair, under the hood pp also rates individual categories, just like osu!tp used to do. There was just no easy way to expose those additional categories and I never got around adding one. Feel free to do it yourself. The necessary programs are open source already (osu-web 2.0 and osu-performance).