The biggest problem was probably matching the mythologies of the different settings but my plan was that all the extra-dimensional gods and other creatures are warp entities. the major ones such as hastur, nyarlathotep and Cthulhu itself are proto-gods more powerful than anything except the four major gods of 40k. while the minor creatures are simply leftover warp demons not aligned to any major power some of these are even relatively benign (Tagers).
All humans are minor psychers this is an established fact in the 40k universe but on the cthulhutech earth it is more pronounced than ever and is actually more stable for a gamut of reason the major ones being the lack of overt interference from major warp beings and the reason a copy of earth exist, experiments made by the old ones(40k old ones not the souls sucking abomination old ones) to create the perfect psychic soldiers in their war against the C'tan.
Ritual magic is a way for low level 40k psykers to use their abilites while para-psychics is a special mostly stable psyker. What 40k would see as normal is what cthulhutech calls zoners and burners, powerfull but insane and unstable.
In relative power levels i see that while the imperium has a higher level of science in most fields in some (energy and production capacity) are more in the cthulhutech verse direction. i also classed power armor as pretty high in the integrity scale of health/armor while things like titans are in the Hull class.
For a basic rundown of scale it goes vitality>integrity>hull each step is worth 50 points so 1 integrity is worth 50 vitality while 50 integrity is worth 1 hull.
(on a side note, i drool, MASS PRODUCED TITANS
)on the more metaphysical side i classed the worst monsters such as Spawn and the most powerful Dhohanoids and Tagers as greater demon/ demon prince level.
My view is that the Nazzadi wont actually be a problem except perhaps for the most strident of the Ordo Xeno because it is canon that variations of the human norm exist even those that look almost exactly like Nazzadi (the inhabitants of Nocturne). The biggest issue will be that they where created by aliens.
On a more personal level i would pay to see what the Inquisition would do to chrysalis corperation or the cults, they have a LOT of experience with cults.....
