Dumb question: does this support the Unity re-release's IWADs for Doom I and II, as well as its downloadable Final Doom, No Rest for the Living, and SIGIL WADs? Another thing, could it be possible to have an option to not have the level author's names appear in the level completion screen?
No dumb questions!
I do plan to support the new widescreen assets from the Unity ports, and using the Unity IWADs as sources in general, but I'm waiting to see what exactly the next release of GZDoom (4.5, probably) does to support these. Once that's out I'll do a WadSmoosh 1.3 release that piggybacks off that.
I'd like the map authors to only be visible if you're playing an IWAD level, and filed this feature request for it https://forum.zdoom.org/viewtopic.php?f=15&t=69424 but unfortunately I don't think it can be disabled for now.