[Will marth wear pants in the DS version!?]

Marth lacks pants in the Snes version too. On the cover and artwork he wears pants. I believe he was intended to wear pants for the second book. Also Smash Brothers Marth is highly inaccurate as canonically he can't even use the Falchion without the Fire Emblem shield.

[What would you like to see in this game?]

It would be pretty cool if they had a playable brigand at least in trial maps or multiplayer and add berserker as a promotion for Daross. I'd hope they add Jake and Beck in again at least in some form.

If they are doing FE3, they'd better add some axe users.