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Worth $70?

Re-designed CoM:
3-D remake
New cutscenes
Additional Dialogue
Theatre Mode
New Boss Battle
New Abilities
Reaction Commands
"Reverse/Rebirth"

KHII:
7+ new boss battles
10+ New cutscenes
2 additional sidequests
Theatre Mode
Dificulty Level: Critical
New explorable areas
New and Reworked Enemies
New Drive Form
New Drive Gauge Limit
New Abilities
New Synthesis Items
New Accessories
Two New Weapons
New Character Costumes
(Downside: In Japanese)

I know that in theatre mode (Not CoM though) when you can re-watch clips and such, you can choose Japanese or English. Or atleast that's what the site I was looking at told me.

*Shrug*

It's already been out awhile in Japan, so it's doubtable that they'll have it here... ever...