Just tested Deus Ex - Revision mod. It's pretty good so far.
The GOTY was £0.83 on Steam and I've installed the revision Mod which the comments say is the one you _should_ play as it's better than the "remaster".
Worth it though I think, I prefer to play as true to original as possible with only QoL changes.
My past experience with trying to get mods on Proton games was much more complicated, but this seems to work fine; a little buggy, but once in gameplay it plays nicely, tested a few minutes of the tutorial on my lunch break and no issues.
If you don't like Github, the main website is simpler to navigate https://mods4ever.com/project/DXRZeroRando