Hi, thank for the comment but i think will not do that.
the problem with your suggestion is that the size of the file still go up. I have to take into account the size of the files until i can get more space on itch.io. Currently i'm still experimenting with the quality of the images to get light files with good quality.
That been say regarding to making the images 1080p in expecific, i don't see the benefit of it. as far as i know most people still are using 720p.
Maybe I can make a 1080p version of the game, but I'm pretty sure I'll make that a membership perk to justify the effort and because sooner or later I won't be able to upload it to itch.