I think this paper demonstrates what is possible using Geometric Algebra in modeling the Standard Model. It lacks detail and clarity in regard to the Higgs sector and make a rather bold claim regarding dark matter states, but the Standard Model overage is good.
Its a bit novel in how it treats spacetime algebra v fiber algebra by making the two share generators, however the mapping feels a bit contrived. It may require more room.
Generations and CKM is barely covered. While the S^3 slide operation does in fact yield the Koide mass relationship in a natural way, it still unclear how the different generations or particle flavors get different masses.
fusis