I am also upset that "lone pairs" are not included in the set, as that would help students see the shape of the molecule more clearly

Not a big deal since most model kits ignore lone pairs but after many years of teaching molecular geometry to college students I find that students do benefit if lone-pairs can be included in their models

For those who would like to include lone-pairs of electrons in their models to help visualize the relationship between Lewis structure and molecular shape (such as on the oxygen in water or the nitrogen in ammonia) it would be nice to have 4-hole (tetrahedral) oxygen and nitrogen atoms in the kit

Just as good as the first.