What's really fun is when you get strong enemies at the same time as you get a really good immigrant - say a high master of a useful skill that is hard to improve (eg. Diagnostician, Leader, Teacher, etc) - and the bad guys go immediately after the immigrants. Especially more fun if there are about 18 immigrants because they all panic and run every which way and it becomes kind of a lottery as to which will survive. Especially if it all happens a fair distance away from wherever your military were training or whatever.
