Updated benchmark

[Plushy]

Would there be any possibility at all of retaining the current graphics in some kind of legacy version of the game program that could be used instead of the updated version? Is it possible at a technical level, and would SE consider implementing it?

Is it possible? Yes. Would someone do it? Highly unlikely...mostly because why would you purposely want the ugly textures back in the game. I can understand your character model but textures like outfit? Someone would have to purposely create blurry, ugly and pixilated textures on purpose...for the newer outfits.
For your character though you can easily get that back to the 2.0 version but you would have to...do you know what to achieve that.

But.. I doubt SE would consider it since you're asking them to downscale textures which is quite honestly a waste of time to please a very, very small set of people and doing this you basically make it so those people never move on.