Think they want to let the new players have a go at the event as well so champions league won't work. And I do observe many tankers trying for CL as well as many win either cup or cl/sl in the previous season. League position might be a better option but again it isn't fair to those at the top or near the top of the servers where top 8 isn't guaranteed even with an active manager with a good team. I can't think of a better way except to make it challenging and have everyone of the same quality grouped together rather than just handing them the prize without any effort.