What I hope for the dungeon changes
Solo mode or story mode?
I hope this is actually more like a story mode rather than a solo mode. Just ramp down the enemy health and damage until you can kill everything with light attacks, while wearing Velothi.
Here on the forums and in my main guild one of the most common dungeon related questions is the story mode, not solo mode.
Why not an actual solo mode? Because there is an
Already existing solo community
There already is a lot of soloing going on in the dungeons. This change should not take away from the existing soloers. Currently, the latest dungeons start to have high damage, high health and the speedrun limit is 25 minutes instead of 30 minutes, so I doubt we will see solo trifectas in the very latest ones.
But if the dungeons are rebalanced and solo mode is something else than just a story mode, I would hope the trifecta is tough, but doable. In MoS, for example, it already is doable solo. That would not require such balancing. But like the two latest dungeons, I doubt we'll see a solo trifecta there, unless either power creep, or rebalancing happens. Rebalancing should not take away from 4 player groups, either.
But on the other hand, I have seen a rising trend of duos doing the newer dungeon trifectas. Which brings me to
What about duo?
The solo mode (or story mode), if done actually that you need to be solo, some people might want to do the stories with a friend or a partner. So in this case, a story mode would be better than a solo mode. As in, there would just be a new difficulty so you could choose story, normal or veteran. And if you select story, you will not queue via finder and fill the group. Instead only your existing group jumps to the dungeon. If you are alone, then it's solo, but if you are grouped up with up to 3 other players, then those who are grouped go there.
But of course there could be some
Achievements
Maybe some "completed X in story mode" and perhaps make it possible to complete some of the RP achievements in story mode, too. Lot of the achievements that are under the normal difficulty are not combat related so there would be no reason to not be able to complete them in story mode.
But other than that, story mode would not give you much rewards to prevent people farming them in story mode. Speaking of repeating the dungeon,
Repeatable quests
The dungeon quest could be repeatable in the story mode. Similar to trial story quest, but without a week's cooldown for better rewards. Once you complete the quest once and got your loot, be it in story mode, normal or veteran, you would not get that again. Instead, repeating the story in story mode would give you something similar you would get if you complete a trial story for the second time the same week. Some low level gold and low xp. You could repeat the quest whenever you want, but if you don't get much more than low gold and low xp, no one would bother farming it.
Bonus QOL request: Reset the dungeon
Unrelated to the solo mode, I would like if there would be a possibility to reset the dungeon. If I solo or play in a group, and me/we are after, say, no death, but happen to die, I would like that we could simply reset the dungeon instead of any trickery or waiting.