This would be useful since MDL serves an international audience. Current age rating edits prioritize ratings from the drama or film's country of origin, but ratings can vary significantly. For example, I am from Canada, and I have seen some dramas list a 15+ rating on MDL (based on their native country), but is rated TV-MA on Netflix. If I was only looking at the MDL rating, I would let my 13 year old watch it, but based on my viewing experience with Netflix, I would definitely not allow them to watch a show that is rated TV-MA on that platform.
This may be more difficult to do, but it would be great to have a drop down tab or menu that shows the different regional ratings. But even having a binary "native" vs "international" rating view would still be helpful to viewers.
This IMDb example shows how ratings can vary dramatically from country to country.
https://m.imdb.com/title/tt0451094/parentalguide/?ref_=tt_stry_pg#certificates