I don't get where the ideas that Logi should use sidearms only or get reduced damage come from. They are still trained soldiers and as such carry the weapons of a soldier. Yes they have a role but it doesn't necessarily mean hiding behind the other troops being everyones *****. Support can mean alot of things. I'm drawing comparisons from other games I've played here and 1 aspect of real life that doesn't interfere with this being a sci fi video game. Combat-Medics, Logistics troops whatever name you want to put on them are still 1st and foremost trained as a soldier they then train for the role after, they go on patrol / fight alongside troops with different roles (Assault, AV etc) even on the frontline providing said support when it is needed not hanging around drinking tea untill it is time to lay an uplink, provide repairs, use a needle or what have you because their ability to fight is reduced. They need to be just as combat effective as other troops. If a logi is using any of the available equipment as well as killing enemys they are still doing their job and supporting the squad, team.

Of course that is not set in stone as this game is still billed as sandbox and it's up to the player how they want to fit or run their suit aswell. Basically there is no right or wrong way because it is choice and opinion.

Personally I carry a nano hive, repair tool and active scanner on my adv Logi, still being able to provide effective firepower and replenish ammo, armour and give intel when the squad needs it.

I also play adv Assault just as much as my Logi if not more so don't dismiss this as bias please.

If you think the Assault class or any other is lack luster try coming up with ways to more define their role instead.