Umm... non-Essentials characters will have access to all the feats in HotFL and HotFK (unless they specifically require an Essentials class feature as a prerequisite). If a feat changed in the Essentials books, then it's changing everywhere.
What about those feats that won't get updated... are they still viable -- for example, racial feats? I'm just not sure how some of these interact with the 'Essentials' classes, features and powers... somehow I feel it all won't just "click" together (balance-wise) as smoothly as it's being billed. But this is just speculation and we should not be discussing it here.
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