I come here to offer you a complex idea but that could add something new. I propose to make possible the creation of private server.
Let me explain, looking for the possibility of playing on a private server with friends I never find how to create a server where only me and my friends could enter. It may be possible to make a private server limited to 5/10 places (just for a group of friends) where we could also add mods like new cars, new skins, or many other things.
And for the creation and the access to the waiters it would be necessary to pass by TruckersMP all the configuration is on your launcher, you just have 2 or 3 steps, first click on the button create a local server after choosing the number of people and finally choose the mods to add and that's all, no access to files and you keep the exclusivity of multiplayer on Euro Truck Simulator 2.
That's my idea I know that many people would like this novelty and I know it's not easy but here is my idea.
Thank you for your attention and your work.
See you soon on the roads ^^