I quickly checked a bunch of parts using 8-8sphe (almost sure there's an intersection somewhere...), the look is not bad using either viewing mode. So I'd suggest to go ahead and submit the updated 1-8sphe primitive. Part's tracker reviewers will validate (or not) by their votes.
My review of parts also show that it would be useful to create a "towball" primitive, specially constructed to properly join a R8 sphere to a R4 cylinder.
My review of parts also show that it would be useful to create a "towball" primitive, specially constructed to properly join a R8 sphere to a R4 cylinder.