It would be great to have Cut tool/Quickslice that use the "Angle Snap" if enabled to cut at specific precise angles (without need of create point for snaps), it could work either only when MAIUSC it's pressed as for splines.
Either way it would be great to have "X-Y-Z BUTTONS" instead of "Reset Plane" for the Slice Plane for utilize it more quickly, instead of rotating it