This is one of the laziest conversion I have seen:

• The lore and background are pretty light in comparison to the original core book.
• All the half breed races are missing
• Barely any heroic path and they give gift only every 4 levels instead of every level
• None of the new classes (prestige and core) are here
• The alternate casting method is not here either. Midnight is a great setting, because it also supported by very flavorful gameplay mechanics, basically none of that is here.

Like other people mentioned it is a pretty straightforward supplement. Nothing ground breaking, but overall some nice additions for a pretty decent price.