Sorcica,
Well, they don't have any armor or weapon proficiencies. Or any attacks. And no class skills. Those are just off the top of my head...
Hey Upper_Krust!
Were you aware of the "Drive Upper_Krust Crazy" organization on the board? (DUCK for short). I have been informed by the sinister cabal that runs DUCK that I have not met my quota of random attacks on yourself, and that there is serious danger that you might soon finish tinkering with "Challenging Challenge Ratings." That, of course, must be prevented at all costs! So here goes:
1. Regarding the deconstruction of the Dragon Type Hit Dice (page 19)- you neglect to include the 13 class skills that all dragons have. (10 for being a dragon, the other three depending on species). This adds another 1.3% to the total of 79.21%, for a grand total of 80.51%. This, in turn, means that the value for Dragon Hit Dice on page 5 is incorrect; instead of saying 0.75 CR/HD, it should be 0.80 (I assume those numbers are rounded down to the nearest 0.05). You should probably recheck all your dragon CRs.
2. Bonus feats. The example for the vampire says that each bonus feat (not tied to HD progression) is worth 0.2 CR. Vampires get 5 bonus feats, so their CR is increased by +1.0 CR.
But the bonus feats in question (Alertness, Combat Reflexes, Dodge, Improved Initiative, Lightning Reflexes) are all "entry level feats-" feats with no pre-requisites. A fighter who spends all his bonus feats on entry level feats will be substantially weaker than one who invests in some of the feat chains. In other words, if the bonus feats are Dodge, Mobility, Spring Attack, Combat Expertise and Whirlwind Attack they should be worth a lot more than the five vampire bonus feats.
This could make a big difference for creatures like Sorcica's outsider mentioned above.
3. Integrated Spellcasting. This is related to the observation about chains of feats. If you have a CR 12 monster, the first few levels of integrated wizard is not worth a whole lot. But each level gets more valuable. It is like a chain of spellcasting abilities: 1st level wizard spells is a pre-requisite to (and less powerful than) 2nd level wizard spells, which is a pre-requisite to (and less powerful than) 3rd level wizard spells, and so on. Your system gives the same flat value to each. Which is like giving all feats the same value.