Ok, so... I'm open to suggestions on this, but I'm thinking on making an entire new set of grafts for your xenoalchemist, based on every monster I can find of the aberration, outsider, plant or construct type and make 4 prestige classes, each one focusing on a different type of grafts. I hope I can get this done,
But I'm not going to dissapoint you, you big...giant....crazy....homebrew lord....magical....dinosaur....err.....thing