Opinion from someone not into live service games. I’ve played Destiny and found the story pushes you along, a lot of interesting set pieces and bosses and expansive world, but that’s on a whole different budget.
Helldivers gets the core gameplay there, but it’s very grindy. You essentially loop into a small flat world without any landmarks and use the mini map to head to the objectives. Which are mostly kill stuff. You interact with a console sometimes.
The meta game is just unlocking new weapons and costumes. You do get early taste of better weapons if you team up with higher level players
The game is most fun in a team, solo is good to learn the ropes but gets tedious quickly. There are no roles or tactics like in Deep Rock Galactic
Enemy variety at least for my brief time playing is very low, there are 2 archetypes, varying from small mobs to the standard armoured large dude or charging monster.
The tutorial is fantastic and hilarious but that type of writing isn’t brought up again.
I would say wait for more content patches. Vehicles, more enemy types, linear worlds or more interesting objectives would drive up the variety and replayablity