i have been playing Dungeon Crawl recently and i did a comparison beetween the gods of original Perplexicon and that game.
Ashenzari the Shackled, shackled god of divinations: Nothing useful.
Beogh the Brigand, god of the orcs: Nothing useful.
Cheibriados the Contemplative, the slow god: There may be something useful in this one: He decreases speed while making you stronger, and at higher levels of piety he gives time-based powers. We could remove the slow part and make a Time god.
Elyvilon the Healer, god of healing: Perhaps could be useful. Gives spells to heal and calm down other creatures/persons.
Fedhas Madash, a god of plants: While the concept would be good, its good being a Nul-Sheal one, overall considering spells work differently here.
Jiyva the Shapeless, god of slimes: Parathun pretty much, except with slimes. Not really anything useful.
Kikubaaqudgha, an evil demon-god of necromantic magic: This one we have something: In Perplexicon there are necromantic powers, zombies, and stuff. This could be the god of Necromancy, Death and Agony, aside of powers, he could give items like Staff Fire Necromantic Beam and Life Drain What im pointing Rings.
Lugonu the Unformed, god of the Abyss: Zentol pretty much. In game he gives powers to his followers about banishing creatures to the Abyss and corrupting levels of the game.
Makhleb the Destroyer, an evil god of slaughter and bloodshed: Blastel but in evil and with some more magic. In the game he gives heal with kills, summons demon allies, and give the powers to fire chaotic energies with random effects, normally deadly. I dont think it fits a lot, considering that hes the god of Hell and Pandemonium, and neither of those exist ingame.
Nemelex Xobeh, the trickster god: This one is complex but may have something. In the game he gives you decks of cards, from which you can draw. Depending on the card you get different effects, there are different types of decks: Decks of Destruction, Decks of summoning, decks of escape, etc. Would need a system made specifically for him but would be quite some fun. As you gain piety with him he gives you better decks usually, and different abilities to make less dangerous their use (Decks can be dangerous, a deck of summoning may summon enemies, or a deck of destruction may cause an explosion over you)
Warmaster Okawaru, god of battle: Kinda like Blastel, but more holy like.
Sif Muna the Loreminder, god of magic and mystical secrets: This one may be something. In the game some of her powers have to do with giving you different magic books and some powers like increased magic regeneration. She likes when you discover new stuff, wether it be a scroll, a book, a potion, etc. In here she may give you words and information about artifacts you find.
The Shining One, a good god of honourable crusade against evil: And yet again, another Blastel, but even more holy.
Trog the Wrathful, a violent god of rage: Well, this one would be THE TRUE Blastel.
Vehumet, god of destructive magic: Sha-Calun.
Xom the Unpredictable, god of chaos: Nothing useful, really. This one in game is a god that considers you his toy, and you must make him have fun else he will blow your head up, but if you make him like you he may be helpful. Doesnt fit.
Yredelemnul the Dark, god of death: This one is very close to another god i already described (God of necromancy)
Zin the Law-Giver, a good god of law and purity: And yet again, holy blastel.