I came back about a month ago and have been playing about 16 hours a day non stop. I just can't get enough of the game, I'm loving it. Tons of new stuff, great content and a lot of new ships to fly. Love love love playing.
I've explored new ships on my Sci, and have leveled up a Fed Tac and my most recent is a Klingon Eng, I absolutely love the klingon ships and have been having a great time with all the Special Task Forces, I got myself into a very active fleet with great people (Tactical Operations Fleet Delta) and its been a blast!
I love the crafting, I enjoy farming and gathering all the new crafting mats and making the awesome gear has kept me plenty busy gearing up all my ships and toons.
I'd suggest giving it a go especially since they are getting to release another batch of new stuff, and as mentioned before Foundry is going to be an AMAZING addition to the game. Can you imagine how much time and effort will go into missions with them open source?