Point number 2 got some problems. Problem is that you seeing your idea only from one servers viewpoint... This way you would make different set of maps of 4 for each server. So in total 9x4 maps, which is more than what we have now and would make joining wvw chaotic(each person would have 4+8 = 12 maps available to join).
Conclusion: This is way worse than what we got now and you need more than 5 minutes to come up with a usable idea.