cross-reference to this post: (no link possible: “Steering for SmartBikes (Stages SB20, …(?))”)
I have no hands-on experience with the FutureWorks Steering (Elite Sterzo Smart), but for me steering on junctions only would be totally fine (left, right or with three joices: default straight with left/right option).
I really cannot imagine to steer more or less constantly using the (digital) buttons of the Stages SB20… and going hard just zwifting through a bunch of people seems more easy and not to forget: should be pretty simple do get implemented.
Benefit: no need to mess with the ZC or tablet or keyboard