Superscipt (small letters) for Basstones

Chords sometimes have an additional Bass note. For example C/E . This means that the Guitar will have to play C and the Bass Guitar E.
As a pianoplayer I play C with right hand and E with left hand.
Unfortunately C is on the left and the / and E on the right side.
I still make mistakes to play the right E with right hand.
In some pianobooks they solve this problem by writing a — and putting the C above and E below that —
Maybe it could help to use superscript for the bassnote E
This could automatically be set after the / character
Thank you