I used to always take the Maglev and metro from PVG to avoid all the taxi scammers, at least in the "old days" when you paid for everything in cash.
I have not tried Didi yet, but I understand you actually select the route and set the price upfront, which significantly reduces the chance of getting scammed, also it finds a "random" nearby taxi?
But considering that there is a "official" taxi queue at PVG, how does that work? Does anyone have any experience with that?

Follow-up question is if anyone has tried the Didi app that exists within the Alipay app?