What I want to talk about is the tank role on DF below level 50, especially ones where you don't get Rage of Halone. I had a hard time levelling it and when I get a low-mid lvl one on roulette it's not fun at all. Level 50+ roulette / dungeons are so much more fun. Some of my encounters:

1) DPS who pull before the tank (and healers who heal them before I can flash them off them)

2) After initial shield lob and I'm waiting for mobs to gather @me I see aoe's/heals before mobs are in flash range

3) After initial shield lob enemy the does an aoe but I see dps and healer are already attacking it from outside the aoe while i'm running out of it.