I did that as well, since alternate audio tracks are relatively easy.
I would caution against using Adywan’s old 1997 SE reconstruction. It was sourced from 2004-era HDTV and encoded relatively small by today’s standards. It’d be a lo-fi source to build on. If you’re able to adjust the 2011 BluRay I think you’ll find a much better end result. I have a bucket of LUTs that were provided to me for 2011 ESB if they’d be helpful. I’ll PM you about them.
I’ll try to make my own correction.