I suggest to make people use at least two different dry compounds per pilot per race. It could be a configurable rule for the league, so the admin can select if he wants to use it or not. That way, the 50% or 25% races won't be affected by having to use two different compounds, when they only make one or two stops. But for 75% races and 100% de H tyres are really overpowered in at least half of the races, so with this feature those races will be at least a little more interesting, with different strategies, and not 32 cars going with H, H, H.