So I started mapping with UDMF (Ultimate Doom Map Format) for GZDoom and Skulltag, and yeah it`s pretty badass! It saved me from trouble of coloring sectors with ACS functions (Sector_SetColor) or fading them (Sector_SetFade).
Instead I can do that without ACS. I can even set ID to a line while giving a totally different action!
HeXen map format is old skool and it`s cool, but UDMF is a fan made format and it`s pretty awesome.
I can even do a separate texture alignment on upper and lower textures in GZDoom Visual Mode.
But still HeXen rules!
UDMF is not a map format on it`s own, it`s more like updated HeXen map format. It still uses ACS and that good stuff HeXen map format brought!