Railgun is the best support weapon by a wide margin and many orbital strikes are just bait. Many of the primary weapons are mediocre and the secondary weapons there’s basically only 1 good one.
That’s said I played a lot of Helldivers 1 and trust that balance and new progression will come.
… I’ve already hit level cap in-game and am almost fully capped on all the samples.
Playing with friends is great imo. If they meta game I suggest just really leaning into a chaotic roleplay.