Would be nice to have "Pre-signal" for railways, the sort of thing that is in TTD. http://wiki.openttd.org/Signals#Pre-signals
It would make rail Stations/Junctions allot easier to manage.

You can use these lua codes to get the "active" count of bots. /c game.player.print(game.player.force.getentitycount("logistic-robot")) /c game.player.print(game.player.force.getentitycount("construction-robot")) These commands do not count the bots that are in storage/...