For Wheel of Time I can think of only two narrative choices that pissed me off as a book fan. In general I just accepted that it was a new turning of the wheel. Things would play out a little differently. No big deal.
I put it aside for a bit and then it was canceled. That hurt more. Star Trek at least had told it's stories. It can end gracefully. It deserves that much.
People don't like endings. I'm one of them.
But, if you force something to continue past it's time then you start making the property as a whole...less than the sum of it's parts.
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The last two seasons of supernatural were rough for that.
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Much of the Hulu Futurama is cringe-y
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Stargate (while admittedly problematic in premise) got bad with the Ori.
Each of those shows had multiple ending seasons that were almost perfect, if they had been allowed to end.