>>51748124It's not really about rendering sprites, it's about doing whole new graphical resources lol
while I 100% agree with your pic, it is absolutely what they should've done, you have to understand that, yes, it would need expanding and animating whole new back sprites that "aren't the same" as the front sprites
Game Freak took the lazy - or more like, humanly possible way - of doing backsprites that are basically the front sprites flipped horizontally.
The animation work then goes much faster, and thus you can do 650 of those.
It is then upscaled and, yes, unfortunately renders like shit because of it. But the only other reasonable thing to do was... render them the exact same size as the front sprites? which would cause massive perspective issues
tldr: Game Freak lazy but you asking for a whole lot lol