Is it worth it to finish my playthrough of Normal mode? The game's quite easy and doesn't have a few quirks of Hard and up like instamoving reinforcements. Plus I didn't resist and grinded a little... too much. I gave the Ch.8 Master Seal to my Avatar already, and the power of my units offsets my bad moves.
Also, the optimization. Is it absolutely necessary? For extra hard DLC maps I suppose it would be, and one save file with optimal setups would be good. But the problem is, for what else? No one in my area plays the game, so I can't do StreetPass with anyone. It would be nice to be able to battle via Wifi, it would give an incentive to perfecting the characters.