It says a lot about ccs that all the automakers are switching off of it. Even if the ccs networks weren’t noticeably worse, nacs is smaller, and should make for much easier vehicle packaging designs (see: Tesla nacs in taillights vs ccs behind a big door)
CCS has the benefit of working well with three-phase power – which isn't used in North America. NACS doesn't support three-phase power but has a more convenient form factor.
Europe will probably stick to CCS Type 2 since three-phase power is commonly available at home.
CCS2 could certainly be redesigned to support 3 phase power in a smaller form factor if they upsized 2 of the power connectors on the mennekes plug to allow them to carry the dc current (similar to how nacs works). But it works well enough for Europe
Not really gonna simplify vehicle designs much, the door still needs to be bigger to support CCS2 in Europe, Chademo in Japan, and whatever China is using. It is easier to have a big door that fits any socket type than it is to have to restructure that entire area between countries.