At this moment it looks like only heavy pop servers are attractive to players. My EMP server Sith ari going down in population rapidly in only 3 weeks (Illum has 3-6 ppl in prime time) , but Tomb of Nadan smth gone back to queue times like on game launch.
Proof: over 150 ppl on Tomb nadan jedi starting zone during primetime and many of them say they are rerolling from other servers...
Ofc, apart from queue time on heavy server, there is huge slowdown on rep fleet where my computer cant handle so much ppl there (10fps), unlike standard server where i have comfortable 25fps.
I really think server merge is urgent thing, much more urgent than LFG tool, dual spec, new content and everything else ppl ask for...