Group 4 or possibly Group B.
Add Fuji, Red Bull Ring, one of the configurations of Saint Croix and whatever tracks are added until January. Get rid of Dragon Trail Gardens and maybe other track.
Formation lap with a race start DTM style (every car 2 by 2 with the leader starting just before the finish line).
Qualifying needs to be extended to 20 minutes in my opinion.
Would like to see a return to either Gr.1 or Gr.3
Fuji, Saint Croix, RBR & Bathurst would all be good additions, especially if we did go back to Gr.3
Like the idea of times races, either 40 or 50 minutes would probably suit this league just fine