Yes, it will be 1 to 2 years before this platform turns into a serious simulator - MS willing (they have to pay for continued development).
Some of my personal requirements:
- multi monitor support (at least triple screen).
- properly working simulation of atmospheric conditions (precip, clouds, weather, winds)
- properly working aerodynamics
- at least a hand full of the provided aircraft with working systems / avionics to a degree where proper flight simming is possible