I would like to limit my selection to points only in a sketch environment. It is quite annoying when I need to create some free shape from splines and the whole spline moves when only a point should.
The selection filter should be available globally, not only in specific environments. I put an example above for a sketch env., similar could be used in creating datum objects, applying constraints, etc.
Some 3D programs have the option to select point / edge / surface / volume.
Here is an example from Ansys - Design modeler:

I am aware of filter selection enabled with shift + right click, or in a drop-down menu:

Link to the forum post about this feature.