Silicon latejoin and the fix of the AI job vaccum

[The Grim Sleeper]

Love the feature. I often deliberatly late-join, as to get a feel for the crew, and always felt this was missing.

I think that adding the latejoin option makes the high priority obsolete, as the issue of no AIs in a round would likely be far less prevalent.

I'd say that since the AI is a rather central figure, this is not a light decision to make.

The AI has a key duty to perform, and having it vacant for any period is a loss.
On the other hand, a willing and capable late-joining is far more fun for everyone then a lost newbie who job-selection is still set to defaults.