Have you played it yourself? But otherwise i skipped some of the second to last osiris mission when my tank was destroyed because there was no chance of being able to kill all pf the enemies (especially because knights got a buff) The one thing that i have to agree with is the amount of times i felt outgunned in the campaign and thought "id be so -blam!-ing dead without the fireteam" But i the writer said that he felt very hit and miss with his fireteams effectiveness I felt more of the hit against most enemies And when it was a miss then i mostly used them as a distraction so i could do the actual damage