Hey welcome to the thread
It plays very well compared to the PC version, in fact their are several if us in this very thread who play both versions and were impressed with the X1 version
Not directly, in fact at the moment my understanding is the X1 is on its own galaxy compared to the PC/MAC, but both are going to get unified soon so the effects Xbox players have on trade pricing / community goals will be felt on PC and vice versa.
Only you can decide that, but as I said earlier several of us have bought it on two systems so we're enjoying it, but you have to make your own way in the game, there isn't a huge story narrative to drive your actions, so if you can make your own fun jump in.
Yes we're a community so we've got you covered
NP