will there be a 737-800\900?

At some point, maybe? Right now I don't know of any plans for that aircraft.

I'd like to see a 737-700 through 900 NG, too. Maybe even with the split scimitar winglets

In the mean time you have the old fashion dials and the 737-500 we have also offers quite a bit in terms of switch-able things. You should give it a try, it's still a very similar aircraft.