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I know there is a lot of nifty scripts for IMDB out there and I do use some of them but one that I used to have works no more. It was called "IMDB sort by ratings" and put a rating in front of every movie title in the filmography listing and sorted them according to rating. I loved it because I could easily find a directors or actors highest rated films..
So if someone could make such a script I'm sure it would get many users. Actually it does not necessary have to sort anything but just put the rating in front of the movie titles. The option to choose between US and Overseas ratings would be really good as the movie taste seams to be somewhat different. The feature could also be added to some of the other scripts.
Hopefully waiting. D
A while ago someone requested a rating overview for actors on IMDB and I created this userscript.
https://www.reddit.com/r/SomebodyMakeThis/comments/7cvmbp/smt_imdbrotten_tomato_average_calculator/
It's really not much more than a proof of concept but maybe it is of use to you until you can find something more fitting.