I'm not an expert but your processor is due an upgrade, also many people with great pcs experience lower frames in days mod, this is going to be addressed in the standalone which is far better optimised,
I think this would be a good idea, but only for some servers, I know many people would like some serves to be more 'hardcore', But personally I'd like to try this out
To address the realism problem, you should be able to spawn into a server with some friends because in real life the first thing you'd do in a Zombie apocalypse would be to find those you know, and it would work so that once one person is killed they are not allowed to re spawn back into their group Also if it was just a server option the hard core players could play on the servers which didn't allow this
I would really like there to be an option that allows people to join with their friends. This shouldn't be available on all servers but I feel this would be a great thing to implement as a server option. I'd like to hear some opinions on this. Thanks in advance