The hate TFU 2 is getting in here really is a perfect example of the "shit or brilliant" mentality that seems to surround everything.
It's honestly a decent game. The only real complaint that can be leveled against it is that it feels like a short DLC and never was worth the initial full price.
Taking what you're being offered here at face value - what is actually two Star Wars games at being ten bucks for a full game and its enjoyably silly expansion, and it makes it really a no-brainer.
I repeat: there's nothing really wrong with the sequel at this price. Don't let the pervasive attitude that because it isn't a proper sequel that it is therefore worthless cloud your judgment. It isn't even remotely near being "garbage", much less bad.