Oh wow this has given me some ideas on what Raziel should look like. I believe Raziel isn't truly trapped in the Reaver since it was imbued the way it should have been with the elemental powers the Soul Reaver gained during Defiance, including the Spirit Reaver forging gained from Ariel ,instead of the pre-fatal paradox when Raziel's spirit was originally put into the Reaver blade making it into a flawed version of the Soul Reaver. I believe that Kain will find a Reaver forge that will allow him to manifest Raziel outside the sword now that it has become the Final Reaver. I also think that this process will restore Raziel to his original state, with his wings and everything along with his new abilities like immunity to water, also I think he will still be able to use the wraith version of the Soul Reaver.
Thank you! I'm not pretty familiar with LOK Universe, 'cause Soul Reaver II was only chapter of the game I made through fully, so I can't say something certain on this matter. I was sympathetic for the character of Soul Reaver II, 'cause everyone knows it really hurts to be an angel once, then thrown into the abyss to be only the weapon for pre-decided fate... just a tool, a puppet dog for ones game in endless circle. Other chapters.... I just can't feel for it's characters, actually, so I don't know, what they were about, sorry.