i’d be fine with them completely re-rendering and re-compositing all of the digital effects in the prequels in 4K, crawl to credits, while merely upscaling the 2k digital live-action footage for episodes 2 and 3.
also, making the lightsabers look more like they do in the sequel trilogy. i’d have no problem with them doing that.
i’m really just imagining them doing all of this with better graphics processing and faster rendering in 2019/2020