In ARR it was arcanist as the “sub job”, in heavensward it was trance turning the summoner into another caster, Stormblood/shadowbringers were my personal favourites because they made it about summoning
SMN was originally designed with Arcanist in mind, the name "Summoner" didn't come about until after the mechanics of the job were made - Sage was the same. I'm guessing they chose "Summoner" because of the pet. Since then they've made it more of an actual Summoner every xpac which made a big ol' mess lol. Now we have people wanting all manner of different things for the same job and there's no pleasing everyone.

I do think they're going in the right direction, there's just going to be a lot of friction going forward no matter what. Personally I just want a job that has the same management play style as current SMN, idc what it's called. I still think it'd be best to split SMN off Arcanist so it can be its own thing - ideally replacing it with a new dot caster (but that"s just me wanting a dot caster).