"...if he had to choose," hm, that doesn't sound he's too willing.
"Roy's story has never been told", well obvs that person isn't aware of fan translation patches or severely underestimates the intelligence of his fans XD.
As much as I'm enjoying Echoes right now, I'd rather see a 1-on-1 remake of Blazing Sword & Sacred Stones with updated graphics, PLUS an updated version of FE6 to bring it up to par to those games or at least remove design flaws (like Merlinus). All three of them combined in one game with the same engine/mechanics would be awesome...kind of like Mario All Stars. Paves the way for Roy, Lyn, Eliwood, Hector, Ephraim, Eirika to join in Super Smash Bros alongside Alm and Celica (while all the boring blue-haired FE characters are dropped because "irrelevant").