There have been plenty of "comet" chamber type systems that use a cavity of air and fuel around the spark to erupt into the main chamber, crating a jet of flame/turbulence to mix and burn the remainder.
Even was sparkplug "adaptors" to do the same thing at one stage.
I'd be concerned that the mod creates a path greater then 0.040 through the quench area, and lead to end gas autoignition at the end of the path.
The idea of a close quench area is to reduce detonation, but also to be a "squish" area to force a large, broad stream of air across the piston top creating turbulence.
I can't see the mod doing anything extremely good.