Fair enough. I like to think IS attempted to ease the newer players into those sort of features through the Awakening -> Birthright -> Conquest line of games. Conquest sort of acts as a middle ground between Awakening and the older games in that regard with most of the features you stated but with Casual mode acting as a small buffer.
I think a re-release depends on how much Nintendo/IS wants to invest in updating older games to have a set of features closer to Awakening. There's plenty they can do to update the games already, but I think that adding a Casual/Phoenix Mode and tweaking things to better suit handheld play are important for accessing the audience that Awakening attracted.