Shulk still isn't buffed, so I'll go back to playing Melee and PM.
If anything, the shield stun buff probably hurts him more since Shulk virtually has no multi-hit moves. The only thing I can remotely see working is a MAC nair into d-smash, but I dunno if that actually works and if it does enough shield stun. Plus MAC into anything is super situational.
At least Puff sort of got buffed I guess, but not by much lol