Well, I just finished the chapter with the PC races, plants, and critters, and kinda looked over the Matters of Prestige chapter, briefly... The races are okay, I guess, but I thought the rest of that chapter was GREAT! Even the recipe was a cute touch. The plants and critters were awesome!
Matters of Prestige is going to need a lot of work! Requirements are going to have to be redone (all Ambidexteritys replaced with Two-Weapon Fighting (Dovers in the Races chapter, too, since 3.5e doesn't have Ambi!), Intuit Direction & Wilderness Lore replaced with Survival, I guess, City Knowledge replaced with Knowledge (Local), I suppose...
Also, looking at the Foci of the Sphere & Deep, I see no reason why an Adept Creature should need to become Gilled, since they have no need to breathe... Maybe there should be an "out", for that... I know the Prestige Races are being redone, so I thought I'd point that out.
Also, in the current version, if a PC enters Focus of the Sphere, for instance, and has lungs and legs, he moves to the third option (Winged). Does he still get in at fourth level (and pay the lower price in this version, although I understand that this mechanic no longer exists)? Does he have to wait until eighth level and pay 7,500 XP?
Also, on the Shapechange Gift, again, does it allow stuff to be taken with you, as in the Druidic Wildshape? I assume so, but it wouldn't hurt to clarify that point, as Lunars can't take their stuff with them!