From what I could tell during playing, a ton of content has been made obsolete, hidden away or replaced.
For example the three specializations, which initially suggest a classic tank / dps / support split, are essentially all dps now because with the good real money stuff any build also has absurd sustain, ways to escape death, and damage to (literally) kill dozens of Borg cubes at once, taking 5 seconds tops.
I mean it’s fine if you enjoy the game, but it really isn’t a good game at all. It’s fun in that it is a way to immerse yourself in Trek content.