They feel like allusions more than anything. Not so subtle ones, at that! If we are to consider FE:if's world and plot in a closed-state situation (barring outrealm equivalents), these characters might be initial Awakening references at first but be significantly different in other aspects. The premises of speculation are still littered with holes. I would not mind something like the above, though it would make me question why characters were essentially re-used. For that specific concern, I definitely am a bit suspicious of them. They may be completely minor characters, but if they are significant ones then there must be a reason behind the similarities. The world travelling idea is an interesting one, but the changed names and Odin's Dark Mage capabilities? It would be awesome, but it would perhaps be a different "world" to the one(s) in Awakening.