Because it's not implemented for all rulesets. Closes https://github.com/ppy/osu/issues/34004.
See https://github.com/ppy/osu/pull/27149#issuecomment-1939509941.
Following discussions on discord, this seems like the most agreed upon value. Increasing this is important so that imported legacy scores don't lose too much value.
LocalisableString
Also, mark as nullable for some properties.
Ranked
IsUserPlayable