If you want a more powerful App Switcher, then perhaps a good place to start is with a new jailbreak tweak called SwitcherControls by iOS developer DGh0st.
Immediately reminiscent of the multi-center feature from a prior jailbreak tweak release known as Auxo 3, SwitcherControls combines both the App Switcher and Control Center interfaces into one, yielding what you see above.