I made Vel as a PC with the hopes of being able to develope an alternate body for the Nuit.
It comes as no suprise that having a spirit possessing a dead body has its drawbacks. Lack of physical strength and speed, they decay over time, and are more than easily wounded. I have been thinking that there could be a mechanincal alternative. Instead of having a flesh body, the Nuit could optionally choose to have a mechanical golem for a body. A simple vascular system to carry around the Ichor to give the Nuit control of the body, some kind of enchanted vessel to hold the Nuit's spirit, and made of stronger materials; however, while this option would allow the Nuit to not have to worry about decay, it would provide other benefits:
-Stronger material:
A player can make the golem's body out of anymaterial found on Miz, though it needs to be physically possible and each material provides a benefit / drawback, and depending on the material would cost more. Which would be subtracted from the player's starting total or they would have to buy later down the line. (E.x. making a body out of wood may make you a bit better defended than flesh but weak against fire reimancy and the like. i.e. a steel/metal body is stronger over all, but slower and prone to rust/lightning Reimancy.)
-More combative:
Nuits aren't the best at combat skills due to the general decay and stiffness of the corpse, so having the golem's body, while the nuit wouldn't become much faster, they would be a bit more well versed at combat, being able to use weapons and shields without worrying about a weak and dead body
However, this isn't all rainbows and sunshine, and there are several drawbacks.
-Inability to use magic.
This option is not for wizards. The Nuit's Ichor and Djed become focused on manipulating the golem body and therefore the ability to use magic becomes near impossible. (Maybe low level magics are obtainable, but nothing intensive and nothing above competent or novice)
-Socially unaccepted
Nuits aren't typically accepted among society, though a few can hide the fact they are a nuit with enough exp in disguise, hypnotize, etc. Being made of metal/wood makes it a lot harder to disguise this fact, and the nuit would be known for what he is instantly.
-Incompatable with certain enviorments
Water becomes a real threat, as a Nuit with a body made of metal will have a hard time swimming. Rust can affect the body like decay, though at varied rates depending on material and climate.
Of course this is just an idea and by means complete. I just want to toss things around and get some ideas before hammering out details