I keep saying this over and over. All that anyone could want is 'faction weapons' type loot from coops, not a new rarity category above orange. It gives me hope that not everyone equates 'loot table' with 'gated content'.
No, I am pretty sure people run over you because there's no little blinking icon popping up and it's actually hard to see if someone goes down if you're not experienced in watching group health bars and other players in general.
And I like it that damage numbers and rewards have nothing to do with eachother, even though I would be on the receiving end if it were to be changed. It simply would hurt any cooperative aspect there is and there's not much importance in team strategy to begin with. Especially in Arkfalls that are 100% pure original zerg fests.
But the leaderboards can stay, they give you an idea on how you performed, with only your numbers you couldn't tell because you lack the information to know wether or not your score is actually good or not.
On the other hand, I've been reported (or at least the group said they would do so) twice for being awesome enough to deal more damage than the rest of the group combined ... but usually such discrepancies are a product of 3 bad players, not one who's above average. : P
To add to the 'number chasing' ... the problem with Defiance is, it's a shooter with no utility skills and one (usually unnecessary) option to heal, what's left is of course the damage dealt number.
For Arkfalls this obviously equates to the time spent overall, since not everyone participated right from the start or left early.
Since you quoted it ... do you know what your combat rating is, what it means? Because I can't really make sense of it. : (
Biological, shock, and fire effects, along with the decoy EGO, all provide utility. But for arkfalls, damage is pretty much the most important element. Your raid is not going to wipe in almost all cases, how quickly the event is completed is the biggest contribution someone can make. For arkfalls, I'm all for adding minimum damage requirements for loot. For group play, where those things could become relevant (if hard modes were added), I'd probably stray away from damage requirements.
Your Challenger won't drive? You're probably in the passenger seat.
Can't sell/delete an item? Check all of your loadouts, it's likely still equipped.
Auction house? Why? It'll just render bits purchased lock boxes pointless, and weapons are mostly equal anyway.
Gear/enemy progression? No thanks, it'll only render 90% of the content trivial when you reach the highest zone.