Having a way to access speed, pitch and eq from the player screen is something I have scheduled for the next feature version 3.1.
A note about the pitch shifting quality: I am using a plugin supplied by Apple for this. I would not expect any big improvements in the quality there in the next time. But, currently there are big advances in the AU-Plugin support on iOS. I might be able to offer AU host possibilities so that you could run third party plugins within Stage Traxx. But this is definitely not a near term goal.