(This is super minor, I’m well aware, and likely only an issue for people whose native languages don’t use periods as decimal separators!)
Given that the ratings field is number-only, depending on the language option that’s on at the moment, I don’t even have “.” on my iOS numbers keyboard (which also has no language switch). I enter “3,5” and whatnot on autopilot very often, and then I get a “please enter a number” error. (I hadn’t realised how often I relied on the ratings arrow buttons to fix this until they disappeared :D)
Given that numbers in the ratings field will never be in the thousands, and so decimal/thousand confusion is a non-issue, would it be possible to allow commas someday too and convert them after input?