I am not sure the reasoning why it's not available for a server host by default (as it was an option in Q3).
Can we please have this option revisited?
I'd like to launch a server but staring at emptiness while waiting for 10-15 minutes is pretty boring.
Having a bot to shoot at while you wait would be nice.
For those unfamiliar with this functionality if you set it to 1, 1 bot will populate a team until 1 human player arrives - at this point the server kicks the bot as the human player joins the team.