The thing about your second suggestion, although quite useful for pianists, is that it "detracts" from the experience of playing other instruments. Music theory is not confined to a singular instrument. Guitar tabs suffer from the same problem; you're not learning how to play music, you just learn how to operate a guitar as a mechanical tool (e.g. if I play the 3rd fret of the 2nd string, I'll achieve the desired result, nevermind what that actually is). The beauty of a musical notation system independent of any instrument is that it works for all of them!
Regarding your first suggestion, there is actually a relation between the two staves: the ledger line above the bass clef and below the treble clef represents the same note: a middle C. Also, keep in mind that, the "larger" the staff, the harder it is to recognize quickly the note to play. It's not a bad idea though, and worth exploring!
Regarding your first suggestion, there is actually a relation between the two staves: the ledger line above the bass clef and below the treble clef represents the same note: a middle C. Also, keep in mind that, the "larger" the staff, the harder it is to recognize quickly the note to play. It's not a bad idea though, and worth exploring!