They both have well-established origins in L4W.Not sure where in the world they'd fit best, perhaps an island has floated/reappeared closer to Daunton, filled with all sorts of elemental creatures, rumoured to have spewed forth from the Elemental Chaos?
Anyways, I would prefer we have the whole book in one proposal, rather than spread out in several threads. People who are interested in the Swordmage are probably also interested in the feats and paragon paths that were designed for it.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.