Some weapons archetypes just don't work PvE. Finding one that does work it too much work. The worst thing you can do is force someone into a meta they dislike. I hate scouts, sidearms, shotguns, snipers, pulse rifles not Graviton in PvE. Stop dictating how to have fun.
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You have exotic choices (weapons and armor) and subclass verbs to use against Champions if you don't like the artifact perks.