Oh, the new leaderboard has PC-98. I'd heard about its development, didn't know it was online.
If that becomes popular, honestly I'm not sure if there's a good reason to keep around the MotK scoreboards anymore... currently the only real niche is including the "untracked" games. Pretty much no one's used them for anything else for many years.
In the case of HRtP... with a new WR holder that uses 5 lives (and has a large enough WR I don't think it's just due to the higher early-game clear bonuses from said lives), I'd propose going with lives should be set to 5 or below... there's no advantage of playing with less than 5, but that'd avoid disqualifying all the historical runs.
I'd message them to propose that, but I don't see a general Silent Selene contact method, only individual developers?