An MMO with so many solo duties, to me, is really strange to think about.

I have nothing at all against people who likes that! It's absolutely understandable that people have different tastes, especially considering the number of people that play this game.
However, given the nature of the genre of the game, it would be nice to be able to complete this kind of duties with friends. I usually do story quests in party with friends, and every time we get a solo duty, we need to disband and wait that everyone finishes by themself before continuing.

So, the question is: would it be possible to change these duties to be completed with a light party? The ideal behaviour would be a scaling depending on how many people are participating to the duty. I think Guild Wars 2 does a great job at this.