not like a “h” for homing but as you said
literally fit the curve into unit range
…but the unit is just window height and not a curve but its display in window.
little scary.. I know. But knowing from animators this is very helpful when you see all your curves together regardless its real scale. If you have scoped rotation in hundreds of degrees and translation in few meters you can't work simultaneously on both of them as homing them together in respect to relation of scales makes translation curve too small. For a animator graphical representation of absolute key values is not so important (or at least he can alway get it despite of it), more important is instant access to all his keys. So, I think, we should have an option to normalize all curves (its view only of course) to window size. Does it make sense to you?
cheers,
sy.