Uhm, I’m sorry but are you Pablo or someone else from the team to say what you’re saying with such confidence? If in your experience companions do insignificant damage it doesn’t mean you was doing it right.
As to the whole “limitations” tirade you have up there - it’s already limited by the fact that you need to forma your stuff, you can’t just put everything you want form the get go - you have to invest resources and time to do so. OP did exactly that - all of the slots are forma’ed yet he simply can not fill up all the slots because of the mod drain limitations which is just silly. I get the point that if I want a companion to have two separate builds for two separate scenarios I might not be able to fit both on a single companion and I might need a second one, but that’s not the case there - OP just can’t have the build he wants and no amount of investment will fix that.
Besides the obvious so called “weapon platforms” I think my fav specific combo is Trinity with a gas paris prime incarnon. Gas can’t do much against armour and Trinity has an armour strip on her link. The problem is the link strips only 3 enemy so regular aoe weapons (that can’t kill armoured enemies) are able to kill only 3 enemies per shot. Yet the gas clouds persist after the shot so you have that satisfying chain reaction of sorts.
Is that the best build I’ve ever played? Not really. Can I do half an hour sp survival using it? I sure can and it’s almost chill (except ridiculously short duration of Trinity’s abilities).
As to the weapon platforms - I quite like nourish wisp, can slap any decent weapon and it’ll become a lot better, roar hildryn is just absurd with full strip and double damage from roar.