Make your own custom rating field and remove the stars from your viewschemes.
That's your quick workaround
I went from full stars to half stars and then to quarters, have a custom field adjacent to the stars to hold these numerical values.
2.5
2.75
3 <---- ok
3.25
3.5
4
I don't use less than 2.5 or more than 4, the main reason was to get 'workable' album scores, which is the average of the track ratings. By 'workable' i mean it's setup to award more if good than take away if bad, so it has 3 states for good (states above 3) but only 2 for negative.
This way a dud track or two won't knock the album average off too much, works prety well with any album size of tracks or genre.
Now i'm trying to map those back to the old 5 star system but the system above has 6 states, that means the lowest 2.5 can't be rated and has to remain unrated if using the stars system ?
So yeah, started off thinking 5 stars was too little, tried alternatives now trying to go back for simplicity.