When you say "it no longer works with GZDoom", what do you mean exactly? How are you running GZDoom? Is doom_complete.pk3 in the same directory as GZDoom? Do you see any errors in the console or log when running?
SIGIL.WAD is fine for Sigil, WadSmoosh should detect it under any filenames it's been released as.
I have no idea if it works with Doom Touch and I cannot commit to supporting that.