I've seen a lot of complaints about how grindy the new Zodiac quest is. I'm actually cool with that and think it's fun (for the most part). The problem as I see it is that having to run old content over and over (especially when they're overgeared) motivates people to want speedruns.
Now, generally this isn't too much of a problem. I'm an i115 tank and I know most of the dungeons pretty well. However, I've been doing most of my runs in DF not wanting to drive the rest of my FC crazy LOL. Well what I've encountered are a lot of demanding people.
One of the things I love about tanking is that the tank sets the pace of the dungeon. And one of the things I HATE about tanking is... that the tank sets the pace of the dungeon.
Many people complain that there aren't enough tanks or that tanks are bad. I think this is in part due to the demanding nature of some of these DF groups. Some want fast runs, some want slow runs. I'm personally happy somewhere in the middle. Like a 15-20 min dungeon run seems like a success to me. MAYBE we can shave off a minute or two sometimes but often at the expense of a lot of extra stress.
Besides, just because a tank knows a dungeon doesn't necessarily mean they know how to skip mobs or what might be the absolute fastest method. I got told I sucked and should not play a tank last night, for example, in what was, on the surface a pretty successful run of Pharos Sirius (no deaths, completed in 15-20 min). I'm not really sure why this was but I assume because I didn't know how to make that run a minute or two quicker.
I think this expectation for DF is way out of proportion to what the average group in DF is capable of. But the mix of expectations means that it is hard to please. Maybe you get yelled at for going too fast in one run and the next run you go faster only to get yelled at for not slowing down or because the healer is stressed by how much you pull.
TL;DR - The demanding nature of some players is why there are less tanks and why some tanks seem bad. The relic quest has greatly increased the demand for speedruns in DF. If you want a guaranteed good, fast group, remember that PF is a thing. Thanks.