There are definitely some levels where spell points are a huge bonus, such as 7th. In a normal game you would have a single 4th level slot, but with spell points you have 38 points, and 4th level spells cost 5 points. So you could end up with 6 more castings of a 4th level spell per day than RAW. (This is reminds me that the spell costs are kinda of wonky compared to previous systems where spells cost a number of points equal to the level you accessed the spells. So 1st were 1 point, 2nd were 3 points, 3rd were 5 points, etc. In that system, you got several magnitudes more lower level spells, but not as many higher level spells as is what's possible in 5E).
That's the kind of balance I'm curious about, and why I was hoping people might have stories of when it came up during play. Right now I see how good that looks on paper, but I still have no practical experience with whether it will be a problem or not.