Hi John,
I suppose my main concern is with one controller controlling the up line, and one the down line, how that factors once it reaches the terminus, itself, along with powering double switches and the like. If I have two trains 'out and about' running on the up and down lines, I would presumably require a third control to work the terminus yard. When one of those trains comes to the termini, the route will have to be 'handed' to the controller of the train.
I am likely to go with manual control for the points. I have seen the likes of Buckingham Central's intricate method of isolating using signals and points. An ingenious system but I am no automatic Crispin!