Why we want server merge? What is the benefit? I guess is higher FP, WZ and UR pop!!! But server merge have lots of problems involved (naming, trolling or rudeness of ppl, strongholds, returning ppl, etc). So, what other solution could have to get more pops???? How about a shared GF server? I mean, everybody stays in his server... the content, chats, sh, legacy info, etc, everything is still on ppl current server, but, when q for WZ or FP or GF in general, you are queueing in the GF server, so the formed group can have ppl from different servers... when you get a pop and load the, lets say, the warzone, you still download the content from your original server, but, the stream of combat data, and the WZ chat are served from the GF server. Maybe would be good to have more than one GF server for geography to have good latency. And maybe would be good to have a GF chat.
I worked in system dev like 17 years now, never in gaming thought... i guess that this solution could be easier to implement than server merge, taking care of naming, SH, legacy, dedicated channels for RP, trolling, etc, etc, etc...
TL;DR: what problem does we want to solve with server merge? Is it possible to have another creative, better solution for that problem?