I like the Wells class appearing, I just saw one pop up in the Vault: Ensnared. Also saw it pop up during the Satellite repair mission in Tau Dewa. Though Im not sure if this is a bug but both times I saw it, it would spawn, fire 2 shots then disappear and another one would appear. It would do this about 3-4 times before it decided it was sure it wanted to help and stayed around.
There were a dozen or more in a Azure Nebula Rescue that I played the other day, but they just flew around not interacting with anything. It kinda fit the theme of the mission, so didn't make much note of it.
The question is if this is a another bug, something to hint what's coming for the winter event and/or 3 year anniversary.
Had a few show-up during a round of Starbase Fleet Defense (see about 10-15). At first I wasn't really paying much attention to them until after the last objective, then I was pretty much "holy crap". Very very interesting...