I'm not sure if anyone has brought this up but it's something that I really hope makes a come back to D&D Next. I loved back in 3rd edition where I could take a class or even a PrC and add it to a monster.

I have had anything from Ogre Wizards to Half-Celestial Satyr Bards and I liked it. I do not want to see 4th edition's monster design because I just didn't like it. I like when monsters and PC's read off the same hymn sheet because it allows me to use PC classes and PrC's very easily.