I was reading a reddit thread and saw this post after I started this thread

AveryFenix 2 months ago
If they just implement a megaserver system like Guild Wars 2 has, they dont need to change anything. Having separate servers is kind of becoming a thing of the past. MMOs need to start embracing the megaserver. It works well for everyone. Just keep all the housing areas on separate servers so the only thing your server really affects is housing.
source he also brings up another good point

AveryFenix 2 months ago
In a way, servers do nothing but separate the overall MMO community. If everything was merged into 1 big megaserver, it would be one big community. Then if they kept the housing areas on the dedicated servers and not merged, the servers would act more like neighborhoods. There would still be smaller communities based around the housing areas. There wouldn't really be a way to make megaservers work in housing areas anyway.