Variations for Heretic Death knights:
-Sword and shield variant, similar to what eriance made but without cloak, with more pieces of armor, different helmet and mainly different shield (maybe the one Hell Warrior uses)
-Bow Variant similar to Hexen II Death knight. This one will replace old Heretic Death knight in matter of behaviour. I never liked how Death Knight were able to throw axe across whole level, I know they were magical axes but...
-Axe variant - only diferent behaviour, it will be more close combat oriented, little faster and able to throw axe not so far away (axes will be influenced by gravity).
Variations for Hexen Ettins (I read about them somewhere around, dont remember where)
-Two Axe Ettin without shoulder pads but with helmet - faster, deadly when close (fast attack), same HP or less than normal ettin.
-Armored Ettin with two maces/other weapon. I found sprite sheet on file server but I really dont like its armor. I will make a new one with chainmail and maybe with helmet (but it would be better for leader)
-Ettin Leader. Idea from your forums. Armored, with hammer and helmets (different on each head)
-Ettin Serpent Rider. Classical ettin riding on Chaos Serpent. The monster will be almost the same as classical Chaos Serpent but it will have more HP, when hurt enough it will become faster (Just like DSparills serpent) and it will drop Ettin when killed. Maybe the rider could use some other type of attack, like tossing Flechettes for example.
I can also try to make some variations to KDiZD Satyr. Something similar to Diablo 1 Goat Clans (with bow or with maul).
KDiZD Shadow would fit into HeXen univers too.
I can also try to make some new Shadow creatures, someone on ZDooM org proposed a Shadow Giant idea.
Another almost complete monster is this barbarian.
Its from Cyclones game from Raven games. And it only needs rotations for attack (which will be like new 20 sprites = hell). Some weapon variations also possible.
Last think I could do at the moment is to revamp Gargoyle from Ichors Carnage Galore (Hexen II gargoyle) to make less obvious that its a model rip. His wings are terrible.
Also some Eriance monsters can be used. Many of them feel more HeXenish than DooMish:
Double Maul Minotaur is cool too, but curent version is converted into DooM palette, which will lead to color lose compared to the original when converted back into Heretic/Hexen palette. I can send a mail to Eriance if he doesnt have version in original colors.