I find the smartphone app menu model vastly superior to the others. I can take 10 minutes to get an order sorted out (ordering with a family takes far longer than a solo order), and I don't slow down the line of people in onesies-and-twosies who already know exactly what they want.

From my perspective, screen-based ordering from multiple kiosks with one or two cashiers is the only way forward, and although from a labour perspective it sucks for locals, it's almost definite that as the number of cashiers required goes down to below one per store, there will be a move to remote models with centralized resources (cashiers assigned to multiple stores) basically acting as intermediaries for the kiosks. It's not even a wage or working conditions issue, it's a labour requirement issue.