Actually, scratch that last post. I view this as more important. The PrBoom core can play the original Doom WADs well enough. However, some efforts to update and improve the core are not without fault. Its lacking true compatibility for other notable Doom WADs, and some other quality of life features are sadly missing.
I understand that the original source port has been heavily modified for the core, but instead of trying to update it internally within Libretro, I think it should be replaced with a port that has benefitted from more recent upstream support. With that in mind, I’d like to see PrBoom+ brought to RetroArch as a core.