Default Kitkat tablet ui mod request?

I know that google removed the code for tablet ui from android 4.4, but is it really all that hard to create a custom rom that uses kitkat as a base and just integrates some of the old jb code for tablet ui? I really don't see why ti would be that hard, but it could be EXTREMELY useful on both large tablets and, actually, almost any phone for which the user wants to have more screen real-estate. Please tell me if this is possible!
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