I don't think that anybody understands. If the 737 Family gets reworked, it will DEFINITELY be better than the A320 Family AND Dash 8 updates. The 737 is such an amazing aircraft, but with the graphics and liveries that we have now, I don't see it's full potential just yet.
The entire 737 family has SO many liveries, and it's the perfect aircraft for medium haul flights, and will be fun to fly to all those destinations when Global Flight comes out.
We need this rework!