I was thinking something along these lines for migrating to the new parameters in the interim if it was possible with the wiki syntax you use if possible for preserving old notes while hiding 120 where 60fps is false or 120fps is unknown. However, I see the transition is already in place so it may be superfluous at this point. Sorry if I wasted your time XD.
Topic on User talk:Garrett
FPS row visibility is not implemented at present but would be something to consider.