Disclaimer: Don't give me credit for this. All the sprite work was made by @Doorhenge (Original Post: https://forum.zdoom.org/viewtopic.php?t=37623)
I recently tried Hexen in dsda-doom and noticed the terrible way it looked because the sprites were not made for widescreen. After some search, I found a widescreen fix for this, but unfortunetly it was GZDoom only (Link is above)
Opened it in Slade and saw the reason for it to not work on non zdoom ports, the sprite were all PNGs.