This suggestion is mainly and only for open world bosses.
Disable auto-attack from bosses whenever there is one player fighting the boss. If there is two or more players that is attacking the boss, the boss gets to auto-attack freely.
Give bosses varied spammable charged up attacks that can critcally hurt the player. If the boss miss, the player gets a chance to attack the boss’ back. Then randomly, the boss may auto-attack for a short while where the player is forced to kite the boss.
The problem with boss freely auto-attacking is that usually it is damaging. Because of that, the only way to win is to kite the boss to death. It is not fun, it is long, and it is boring.
I also add in interesting and creative mechanic as well.
Let this be present in all bosses including Champion bosses since most GW2 players are usually soloing. Legendary bosses like Temple Bosses can remain untouched.
5x Warrior, 5x Ranger, 4x Elementalist, 4x Engineer,
4x Necromancer, 3x Mesmer, 4x Guardian, 4x Thief, 4 Revenant
You can solo everything anyway as it is. You’ve got a dodge button.
How far that little candle throws its beams!
So shines a good deed in a naughty world.
- William Shakespear