''Star Trek Online is currently down for emergency maintenance . We are trying to get the shard up as soon as possible. Please keep an eye here for more details, and to be advised when the servers are back up! Thank you, The Star Trek Online Team'' we just have to wait now
More servers won't help when the servers are down for maintenance... fyi.
And in the case of STO - more capacity is what they're learning from this. If this was a launched game, I might be more critical about it, but this is a beta - you're playing for free at this point, there's no reason to get upset about capacity at this stage. You have a voice in the beta, use it.
At this point in time, it would be wishful thinking to assume they are adding more capacity to something for all intents is costing them more money to get going than it is getting it online. So at this point in time, they're applying a hotfix to the code that they'll push out, or they're reconfiguring the shard arrangement to get more throughput / better performance from what they've already got.
Experience in watching this kind of thing happen has shown me that if they add capacity, they'll tell you first, then roll it out at a later date. Cryptic might be different, but I haven't seen anything to say otherwise. It's a tried & true way of informing folks.