What cubes is getting at is that many of those maps under taiko ranking criteria wouldn't even have charts at all if they had gone for ranking as taiko maps. Why should we consider scores for maps that have unrankable things in them at all for a mode that we already have hundreds upon hundreds of ranked taiko specific maps that all meet ranking criteria?
Converted maps had their place ages ago when there were very few ranked low difficulty maps for taiko. They filled the LARGE gap between starting taiko fresh, and playing Oni difficulty maps (due to taiko specific mapsets not being rankable back then and people only making Oni guest difficulties)... but now that we have those mapsets, they really don't serve a purpose anymore. While I don't think we should remove the rankings from these maps, we definitely don't need to consider them for our ranking system.
Converted maps had their place ages ago when there were very few ranked low difficulty maps for taiko. They filled the LARGE gap between starting taiko fresh, and playing Oni difficulty maps (due to taiko specific mapsets not being rankable back then and people only making Oni guest difficulties)... but now that we have those mapsets, they really don't serve a purpose anymore. While I don't think we should remove the rankings from these maps, we definitely don't need to consider them for our ranking system.