An experiment.

[warcrimes]

force sec roles to be filled at a certain % of pop.

I would really like that. Lord knows if it would be of any benefit, it just gut feels like the right course.

How difficult is it to implement? 
lets say you wanted like, 10% sec, could you just make every 10th pick override into security? 
Or here's a real wierdo suggestion - what if every 10th pick (starting from a random 0-9th pick so the heads arent always excluded) was both their civilian and security role? i.e. Security Chef, Security Janitor, Security Assistant, etc - Start with the standard civilian uniform, corresponding ID + Sec access, and a backpack with all the sec gear they'd normally need in their off hand. 

That way you can "fill" sec, but also not get roundstart suicides from people who really REALLY wanted to make borgers. They can just make borgers from brigmates.