A puzzling idea... Positioning the jet nozzles is going to be tricky, but this idea has potential. I'm just not sure that it's worth all the hassle though: the results may not be better.
The Cascade design has straight up holes not just for simplicity, but because the resulting "fins" on the baseplate are steady throughout the core area. It may be possible to optimize this "fin" pattern in a radial pattern here, but careful attention to the geometry of the heat source would be required. Also, hole size versus resulting fin thickness is going to be critical.
The only advantage I see is that since the fin is effectively longer, it increases the surface area of the fin, which may help heat transfer at that point, but that's just secondary: the primary cooling is the jet inpingement at the bottom of the cup, and that doesn't change here.
I'll wait for results!
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