Hello
So I saw the artificer reanimator, and I was underwhelmed. I've found in general that a lot of the "pet subclasses" (a ranger beastmaster, a pact of the chain warlock, a battlesmith etc) have pets that are rather underwhelming.
And... they kind of have to be weak. If the pet was very powerful, you would now have the power of two PCs! In many cases, "using" the pet consumes a bonus action, so the pet has to be roughly as impactful as the bonus action provided by another subclass. This isn't that potent, and as a result the design space is limited.
How can we free ourselves of these limits? How can we have a character, a summoner type, who's main power is their powerful "pet" - a dragon, a golem, a potent nature spirit?
Here is how I would do it with an Artificer:
The Golemist
TL,DR: The artificer has a "permanent" pet, and it uses a bonus action to both control the golem
and cast a bonus action spell on it that bolsters the golem. Because the PC has used a spell slot, its main action will be a basic attack or a cantrip - meaning the golem is the main source of offensive power,
This is a bit like a paladin using their spell slots to smite - but instead of having the smite be combined with an attack from the PC it is combined with the attack of the golem. Balancing this will be tricky But I believe that this design space could be used to create certain fantasy archetypes that didn't fit so well in the current DnD rules.