The most common use for this that springs to mind is the Metacritic/OpenCritic prediction threads that we often have on the site.
'Predict Borderlands 3's Metascore one week after launch'.
And then the creator of the thread sets the options like they would a poll, but now people can bet their VG$ on their guess being right.
I see another use for it: the bold prediction threads could now come with options for other users. Like will Breath of the Wild sell more than Mario Odyssey. Or a thread asking how much the PS5 will sell in the first full year. The option would cover good intervals for that. We had threads asking this stuff, now can people bet VG$ on their predictions.