It's fine the way it is.
Cutting the teeth down to increase peaks torque levels doesn't matter anyway because you can't operate it at that torque level for more than a few moments or the copper overheats.
read here
www.mdpi.com/2075-1702/4/1/2/pdfSo it is good to have wide open teeth, the reason why is because there is less leakage flux between the teeth. The problem is, it significantly increases eddy currents in the magnets. depending on what rpm and torque you intend to get, this may or may not be significant.
from
https://www.comsol.com/paper/download/199803/giacometti_paper.pdf you can find approximately the ideal ratio of slot tooth width to slot width. its about 1:1.6 to 2. the ratio you find in traditional induction motors is about 1:1, or 1:1.5, but its not that bad. in a ceramic magnet motor, 10 poles, 12 slots, i found the ratio was about 2-3:1 (i could go measure it, but you're using neodymium, not ceramic magnets). there's basically twice the volume of copper as there is volume of teeth.
far as i know, ideally the depth of the slot is ideally the same as the width of the slot. but its not that much of a hit to stick with the traditional 2 or 3:1 depth to width ratio of the slot. basically you want to keep the magnetic flux lines away from the coil, and a good way to do that is fit all the copper in a 1:1 cross section. traditional machines have deep slots because the coils span several slots. when you look at the entire coil, the coil takes up a 1:1 cross section, but its spread out across at least 3 slots, each with a 3:1 cross section ratio.
I see no reason to increase the magnets beyond the number of slots, because the increased eddy current losses scale with the square of the frequency.. this is why its so much of a hit to cut the laminations.
some magnet to slot ratios are much worse than others at air gap harmonics. the 24 magnet 36 slot has much less eddy current losses in the core as compared to the 30 pole 36 slot, but the winding factor is .86 instead of .96. so its rarely a good choice.