Golemancers are more akin to necromancer hoards or a land druid pixie swarm. Multiple creatures, not single unbeatable champions. Even then, its highly clunky to do a half-caster with leveling pet - half casters want to use their actions for attacks, bonus actions for spells (or vice versa), and pets try to leech off your action economy.Why? Rangers already have Beast Mastery, so a Golem Master should be just as prime. Granted, Beast Masters are a bit chunky right now, but there is no time like the present to get a working set of pet rules.
Half-caster also implies that the buffing-potion master as well as the explosive specialist will be making mundane attacks. That's simply poor design, favoring a bow caster or rune hammer, and trying to shoehorn the others into that kind. Look at the cleric - some are pure casters, some are spell-maces, some use cantrips to make sticks to hit you with.
And yet, they didn't. The bard started off as half-, but it was decided to be too clunky for future development, and too confusing and complicated for the Lore bard to work well. The same reasoning applies here.You could theoretically add full casting to an existing half-caster,
So... yeah. Granting advantage or resistance is just one or two abilities/spells. Hit point recovery, temporary hit points need scaling. SOME artificers need weapon damage scaling, some need "spell" damage scaling.but buffs don't need to scale nearly as much as damage does. In fact, things like advantage or resistance don't need to scale at all (because they are just as effective at level 1 as they are at level 20) and things like +AC or +Hit shouldn't scale much (because that would break things). Hit points are weird kind of binary thing. Temporary hit points would need some scaling, and an Alchemist would need some way to scale their personal damage, but that could potentially be handled with abilities, or just giving them some cantrips instead of level 9 spells.
Outside of the warlock (whom we should not mimic), cantrips are substandard damage, not meant to be the main source of your attack. If you're expecting cantrips to make up a notable part of your attacks, then we should have full casting and be consistent with everyone else.
And I still submit that assuming everyone is doing the whole magic-weapon-attack thing is detrimental to the class design.
Not targeting you specifically, Ezekiel, but I think its kinda relevant. No matter how people feel about the issue, any 5e Artificer class is going to need to take both the 3e and 4e incarnations into account. You can't ignore either. Or, perhaps, you have to ignore both, depending on your point of view.You'll have to pardon me for not being particularly enthused by "arcane leader powers with tech-paint."