Are you under the impression that “controlling computers” aren’t already in use in the centre that co-ordinate ramp operations, and also aware that things like Start up times and associated runway slots can change at the drop of a hat?...and that’s just the departing stuff.
An ideal arrival stand plan, perhaps in part already generated with the assistance of a computer be stuffed by a jetty breaking down....it’s something along the lines of a tactical plan never surviving first contact with the enemy....and once it goes off plan the human being comes into his/her own.
Most of the problems we see on the ramp aren’t down to a lack of planning, they are down to resources being stretched so drum tight (probably due to some algorithm) that there is no flex in the system to cope with anything going off plan...fully automating the current process (even if possible) with the current level of resources won’t suddenly improve the ramp “experience”.