As a player who is on my second season of getting into Mythic+, I felt that delves would be a good solo experience to practice the same sort of skills I’m developing in lower keys with group content; things like movement and dodging boss abilities, timing interrupts and cooldowns, when to use personal defensives.
These skills are hard to practice in non group content in current WoW; open world rares are a free for all or outgeared, and open world content in general is tuned very differently.
Delves looked like the perfect place to practice solo for the kind of increasing tiered difficulty group content I’m getting into.
And they were; on my DPS characters. I felt like I was developing the same kind of skills and reflexes that I learn in Mythic+, and in content where I didn’t have to pretend that oops standing in that is a “wipe” when it really was a death on an appropriately tiered delve.
Then I tried my hand at Mistweaver, a spec I’m still learning in group content, and find that practice is difficult as there’s a level of expectation of performance in the group content that is pushing my personal skill level; especially now with the larger gap between queued heroics and even Mythic 0 dungeons; in terms of mob/boss difficulty and mechanics.
What I wanted as a healer in a Delve solo and kind of expected to be the case was an experience where I had Brann as a DPS, in a party frame (so I can see things like, is my Mist on him? Can I cleanse something?), and he would reasonably take and hold aggro and as a healer I would be healing Brann, managing my healer threat in a party situation, doing some DPS alongside Brann and mechanical work, like a healer would in group content.
Instead what I got was having to set Brann as a focus, he never took aggro and I got a boss wailing on my healer while I tried to survive via healing myself, dodge primary target aggro mechanics (ie, I couldn’t sidestep a frontal like a healer would in Mythic+ as the boss would just rotate onto me like I was the tank)
It felt like a frustrating experience of trying to simulatenously fill the tank and healer role, which no class is built for, while contributing some DPS alongside Brann.
On my DPS class I did several delves, learnt from deaths and honestly feel like it honed my skill in the game.
As a healer, I quit in frustration because I wasn’t having a good experience and what I learnt from having a boss wail on me while Brann was on the sideline would in no way translate into me being a better healer in group content.