What would be so bad about that? They've already done the same to Ness and Lucas.
Okay, I'm probably not the best person in the world to come up with a full fledged moveset, but I think I can at least manage a solid list of specials.
Neutral
Stream Edge- Deals damage to enemies in a wide arc in front of Shulk
Shaker Edge- Slower than Stream Edge, with a smaller range, but does more damage.
War Swing (borrowed from Reyn)- does light damage to enemies on both sides of Shulk. Offers mild horizontal recovery when used in the air.
Down
Battle Soul- Fills up the talent gauge slightly while boosting Shulk's percentage by around 10%-15%.
Light Heal- Recovers around 10%-15% (or 10-15 HP in a stamina battle). Comes with a recovery time in between uses.
Shadow Eye- Allows Shulk to automatically dodge the next attack, and boosts the power of his own next attack. comes with a recovery time between uses.
Side
Backslash- Long range slashing attack that deals extra damage when used from behind.
Slit Edge- Short range stabbing attack that lowers defense when used from behind.
Bitey Bitey (Borrowed from Riki)- Medium range slashing attack that deals poison damage when used from behind.
Up
Air Slash- a slashing motion that works kind of similar to Ike's Aether and Kirby's Final Cutter. Medium vertical recovery.
(And this is where I start having to bend the canon behind how these arts work a bit to make something that works in Smash.)
Zero Gravity (borrowed from Seven)- Forms a small anti-gravity field around Shulk that raises him up. His best recovery special. Can also catch nearby enemies for minor damage.
Soaring Tempest (Borrowed from Dunban)- Similar to the War Swing borrowed from Reyn, only giving him some light aerial recovery rather than horizontal recovery, along with doing more damage. Has the best overall damage output of his up specials, but has the worst recovery of each of them.