I have began basic work on a 737-700 for the game. There seems to be -800s but no -700s that are easily repaintable. The current targeted release date for these is December 17 but it could be pushed back at latest by Christmas.
Liverys available right away:
Generic no marks
BBJ custom livery
Southwest N213WN-“free bags fly here”
Southwest N7702A
KLM PH-GBH
Will all be available from a thread to download.
If you want updates on the project please dm me on discord @ A10f4ang #9002