I'm not bothered about the Summit rewards - I don't have the skills to get above silver and the rerolling crap I refuse to spend time on to get "perfect" sets. I will get the Summit cars in the future, either via tickets in the shop or, towards the end of game, when Summits are rerun, assuming that happens the same way as TC2. By then, getting Platinum should be more achievable for me.
My irritation with the Summit is the meagre rewards for completing 3,6,9 events in most weeks, which dont provide much enticement either. At least we got 5 Hypercar parts last week.
I do try to complete most of the Main Stage tasks as they are more interesting to me, in order to get to level 10 and unlock the main Main Stage rewards. I know you can get these via the Legacy, but I get more enjoyment from the game this way.
I've also stopped logging in daily for Custom Show voting, unless I am playing the game properly that day.
All these things help to reduce the amount of burnout/fatigue from playing the game day after day, as I only need to play about 2 days a week this way.
I want to keep the game "fresh" for March when the big stuff arrives (Nascar, and the track creator especially).
I should finish by saying these are only minor quibbles in the end. There is so much to enjoy in this game between collectibles, tasks, feats, Legacy events, custom mode etc etc, there's no need to be funnelled into one particular mode of the game (I.e. the Summit).