I just don't see the need for a computer to do a simple task as selecting the proper chainring/cog combo. I like my mountain bikes to be reliable, don't see electronics being reliable let alone making as good a decision or shift as I can on my own. One good crash and what happens then? Riding in sloppy conditions would you get electronically driven chain suck? Heck, my phone isn't even reliable.
Do you have problems with different gate patterns (which aren't linear to my mind) with the various manual auto transmissions?