Bit disappointed in the partner changes, although I didn't change manufacturer, I didn't find the race was much different in our 100% race. WAY less of a change than I expected, at least.
Anyway, my suggestion is that iGP change the way it has to develop, and changes the game for everyone in a very effective way. By not having shorter races, but simply accelarating 100% distance races by the specified amount. That way, any design changes, any dev changes, any alterations into how things work do not have to cater to so many massively different playing styles (I often feel those who run short races every day overpower those who run full races less often).
Obviously laptimes etc should be the same, but a 1:30 lap should take 45s in real time when 50% is activated. People would be sat there for the same amount of time.
I know there could be issues with last minute pit stop changes being made on the in lap, etc, but I think the trade off could be worth it.