Now that I think about it, we don't have a sheath-style sword character in Brawl aside from Lyn, do we? Roy being changed to a sheath-style would give him TONS more originality.
Also, since Roy will be more sheath-based, maybe we should alter Roy's counter to focus less on power and more on stunning the enemy? The stronger the move that Roy is countering, the harder the stun becomes. Then this could be used to combo into another move, which, depending on how bad the stun is, could have some devastating results.
One more thing-- I can imagine Roy's moves actually becoming a little faster because of his sword-sheath style, but maybe they could have bigger amounts of lag after the actual move is done since he has to re-sheath his sword? Balances out the three characters and gives them their own distinct playstyle.
Also, since Roy will be more sheath-based, maybe we should alter Roy's counter to focus less on power and more on stunning the enemy? The stronger the move that Roy is countering, the harder the stun becomes. Then this could be used to combo into another move, which, depending on how bad the stun is, could have some devastating results.
One more thing-- I can imagine Roy's moves actually becoming a little faster because of his sword-sheath style, but maybe they could have bigger amounts of lag after the actual move is done since he has to re-sheath his sword? Balances out the three characters and gives them their own distinct playstyle.