Basically those units are a great idea, but to keep costs down they only serve one at a time. If that could change to each unit even serving 2-3 the bottlenecks

Basically those units are a great idea, but to keep costs down they only serve one at a time. If that could change to each unit even serving 2-3 the bottlenecks would ease, and you could also consider blended approach in which you have the standard 4-6 nozzle dispenser and one or two freestyles. After all some people really have no interest in anything other than straightforward Cokeor whatever else.