Cool! Please make more vids if you can, the more vids people make the more people find out about the project :)
I read your description, I suggest you keep on playing on hard, as my hard is sort of the same as the brutal difficulty on the campaign.
I always felt like the difficulties in the campaign was too easy and there I've boosted them up. Brutal is aimed for those playing at Gold-Diamond rank, for the whole team.
Like I've had reviews saying it's too easy and some complain it's too hard, so it's hard to find a balance that fits everyone.