The BRD buffs look pretty solid IMO. A higher sustained damage allows for saving of CD's in the need of burst/dealing with mechanics. Blunt Arrow having double potency is a significant increase.
DOTs Changes -> higher AOE potential without altering burst AOE too much, higher sustained @ a 3.33 pps increase.
Blunt -> Burst Potential + Higher Sustained
EA -> Significant Burst Paired with Barrage + Higher Sustained
Flaming Arrow -> Significant AOE increase
Sidewinder.....an increase that doesn't change anything significant lol.
If you look at the single target pps of 6.667 combined from all the changes you will notice that the changes to the DOTs is exactly half @ 3.33 pps. The target here I believe was having the ability to hold burst CD's if required, which it appears to have done.
For the most part, BRD now has a ~100 DPS increase @ current gear + changes to BV and songs.