The caves of chaos looks hella fun - but, so far, I only feel like playing the dwarf fighter.
No info has been given on class creation. I don't know where people are getting information about 'backgrounds' or 'themes'. From what I gather, themes are just 'extra feat' and backgrounds are nifty bonuses that may or may not contain a feat too.
It looks interesting - though I don't like how large creatures take up 1.5 spaces instead of two and collossal creatures are 3 instead of 5. Was that put in there just to facillitate surrounding rules? Shouldn't a collossal creature surround a smaller creature, just by stepping over it?