Just a little thing I found personally while at level 30.
I have many deeds collected but I have no incentive to do them what so ever. I mean, I’ve heard that if you fail a deed you lose it so I don’t want to risk it with a pug Group, the chests are just giving out crafting fodder at this Point, which doesn’t give you nearly enough scrap and stuff anyway, so the only reason is to make the maps a bit more difficult. But would I really wish to do so? Not personally, since you only get one or two of the regular chests from doing them.
The thing that could change that and make more people wish to play them is to have the chest rewards hold a guaranteed cosmetic item AND a weapon illusion. In my opinion, that would make it more worthwhile attempting them and seem more fun to do. The chests don’t need to look different, but you could give them the “(Heroic)” tag behind it to show that it comes from a deed.
Just a thought, since the current cosmetic droprate is god awful as well. (I mean, I’m at level 150 +8 (all characters) and I haven’t gotten a single cosmetic item)