So I have now put 16 hours into this game and thought that I would let you all know my thoughts on it.
1: It's not as bad as the yelling on the internet would have you believe. Are there bugs, yeah, for me personally it has been at about the same level of jank as Skyrim at launch, less than fallout 3. If you wanna wait until it is on a steam sale 3-4 months from now, that is probably the best course of action. The same situation with the performance. I have a rig that really should be getting more out of it, but it looks good and the framerate is never so low that it is felt.
2: They have changed that game from the previous games in the series. It is far easier to get into, still is more than a bit confusing in places but again, in 3-4 months it will just be a case of looking at a wiki when you are playing to explain the systems a bit better. Once you begin to understand what things do and why, it is actually not to bad. The best analogy that I can think of is Crusader Kings 2/Europa Universalis 4.
3: I have having fun with it even with the issues that it has. I enjoy establishing some profitable trade routes, upgrading my ship, fighting pirates and so one so forth and it is relatively solid in all these things. Even if you don't like trading, you are more than able to make enough money to do everything that you need from doing combat missions i.e. protect this space station, blow up this capital ship ect, and the oposite is also true.
In short, if you are casually interested in a space sim game, I would wait a few months for it to be on sale then I would say go for it. If you are hardcore about space sims, you probably already own it.