Well some of these suggestions might seem that they would be a good idea to implement into Dayz. Most of them would kind of ruin the charm that makes Dayz so interesting and fun. One of the reasons dayz is fun is their are no skills except the skill of the player. Also colonies are kind of already implemented in the form of camps(not really but it is a start) and that kind of general idea is going to be implemented later on(it may not be like that but something along those lines). Finally the blood system is fine as it is and though blood does regenerate in real life it would be to slowly to make any sort of difference. Having blood regenerate in a short matter of time like this would completely remove the need for teamwork and cooperation(something that is essential in real life situations like this) and remove the need for bloodbags.
