Let's take your questions one at a time:
Q: How long is the modelled route?
The mainline is 16 miles, plus there's the short Buckhorn Branch, Mulberry Lbr. spur, Phipps Lbr. spur, etc. The length is deceiving. It will take you nearly 1 hour to run a heavy freight train to the end of the line. You will work long and hard to get over the long northbound 4% grade to Fly Gap. Better watch your fire!
Q: How many branches and towns?
One actual "branch". (See above. )
Q: Are there any towns along it that are now ghost towns/nonexistent?
Not sure I understand your question.
As a model, the Ozark Northern is set in the 1893 time frame. Using the "real world" as a guide for the ON world, there were no ghost towns then in the Ozarks. For the most part, places were experiencing settlement and growth.
Now, in the "real world", the Ozark Northern is set among a region that had two primary railroads: The Frisco's St. Paul Branch, and the Black Mountain & Eastern. (Later known as the Combs Cass & Eastern.) I have used the actual Cass area for the ON's interchange with the Black Mountain & Eastern. The prototype BM&E terminated at Cass. The ON is freelanced from Cass to Brashears. At that point, I pick up the roadbed of the prototype Frisco St. Paul Branch for the run to St. Paul. St. Paul proper contains essentially all of the rail elements (with some additions) that existed "back when" the Frisco's St. Paul Branch was booming.
Q: Will there be passenger timetables/operational info provided with the final product?
Operational info, yes. Don't know about working out a timetable schedule.
Q: Would you have any screens of the track from the activity editor?
I do now!
We'll work our way north from the southernmost connection/terminal town of Turners Bend.
Notes about Turners Bend: As with 99% of the places on the ON, Turners Bend exists, but not in the scope depicted. In the ON's world, Turners Bend is where the ON connects with the Arkansas River & Northern, a shortline that (in theory) runs north out the Arkansas River valley at Ozark, Arkansas northward to connect with the ON. At Ozark, the AR&N theoretically connects with the prototype St. Louis, Iron Mountain & Southern at the river town of Ozark, Arkansas. (Historical note: The St.IM&S became the Missouri Pacific, which is now is the UP. The rails still run through Ozark, Arkansas and sees many trains per day.)
Here is Turners Bend: