It’s already the case as shown on your very own screenshots here.
Plus it seems you keep confusing dimensions and aspect ratio.
Dimensions can vary but it will only affect the definition (HD, Full HD, 4K, and everything in between) / amount of details of the pictures but the aspect ratio (which is what you seem to be interested in if I refer to your linked topic) will always be the same:
- 2-3 for posters
- 16-9 for backdrops
There is no need for those to be displayed in the app. It’s standard.
