I came in a little late but "Fahrt Dortmund Unna" is a nice route and it was great fun. What days/time do you guys usually ride? Do you have a set time ?
Also, what is your feeling about Bkool? Are people leaving this group/Bkool to use Zwift rtg or some of the other platforms ?
Personally I like Bkool better than Zwift and have no plans to switch. I have even recently "recruited" 3 people here in my town recently to use Bkool

I know Bkool is not perfect (expecially the website) but I think they are doing some good things in the app itself.
All the best, Gos