It would be lovely to have a 737, It is a great plane. Totally different in some regards to the A320. I fly the Zibo one for Xplane often. I also think its better than the PMDG I had for FSX ( I know it got better since then) but for free it’s pay ware quality and more, often it makes some pay ware look like a joke.
I am positive once the SDK/Flight models are down, the Auto Pilot is reliable we will get some seriously good Add-ons. But ASOBO are in control of this.