Guild Wars 2

I bought my account pre-release but stopped playing until about 2 months ago because of RL issues. Now that i have a chance to play again i’m finding this game to be amazing both in content and design.
Thanks to the Loins Arch invasion and a few booster gifts that came in the mail i have been able to reach level 80 and am working kitten my Ascended armor as well as map completion. Doing the daily events for Dragonite and Bloodstone is a big part of that and the events that provide them are a lot of fun.
My question is about the events that hardly anyone ever does i.e. Eye of Zaitan, Three-Headed Worm, Taidha Covington and a few others seem to be avoided like the plague by most players for some reason. I’m told by guildies the reason some are avoided are things like high failure rate, takes too long or in the case of the Three-Headed Worm it was just a poorly designed fight requiring very high coordination and a lot of people.
Are these events ever reviewed by the team in charge of content to give players an incentive that would be equal to the challenge? Or possibly a slight modification to the fight itself?
One last question I have is specifically regarding The Risen Priest of Lyssa. As of today it has been bugged for over 48 hours where we cannot capture the last song on JQ. Is there an outlet we can use to request a reset of the event in cases like this so we’re not missing out on the fight for a few days?