A possible change in character naming conventions only adds to the evidence that we will eventually see a major overhaul in the server structure. TOR Community claims that players will be able to add spaces in their character names when Update 4.3 launches. There will have to be three letters before the space and three letters after, and of course, the structure of whispers will have to change, as well.
When looking at the actual datamined information, there is no clear indication of how the servers will be structured, but it is clear that BioWare has at very least been experimenting with a change to its current sharded server system.
Source: TOR Community, Datamined string tables
