@ snacko, there are both just rotary and rotary with push, the later is most useful for sims IMO. That does require 3 inputs per encoders, (cw, ccw, push).
As Brun says, a BBI32 doesn't have enough inputs, you would need the BBI64 or equivalent.
I'd go for a BU0836X in this case, if pots are used where it should.
But I haven't counted inputs,
Buttons need 1 input,
Toggles need 1 per "on" state
Encoders need 2 or 3 depending on push or not
And potentiometers need axis.
Hope that helps :)