My suggestion to MDL would be to input a filter in the watchlist. So when I check the filter by type and countries for example, I can see the list of only chinese movies I watched, or only Korean dramas I watch.
If I check more filters for example rating 10, 9, 8 then year 2015-2020, the list will show the titles according to my filter terms.
Having sort function is not enough, especially when the list have grown longer over the years.
Please vote if you agree so it could be im0lemented. Thank you! ^-^