As a tank and healer myself When tanking I will always bite a small pull first to see how my PuG handles it if it's smooth and easy, I'll pull more. If it's grating and people aren't even trying to AoE or move out of stuff, or the healers overfocused on damage to the point that my health drops into danger levels with a CD Popped to the point that I gotta clemency myself twice in a row? You're darn straight they aren't going to get big pulls out of me.

I wont claim all tanks do this TBH since I heal more often than tank I rarely ever get a Tank that even tries to mitigate or move (Looking at you DRK Not all of you but most I've gotten stuck healing are culprit)

I also pop potions and do what I can to stay alive but I'll be honest theres alot of bad healers out there too all it takes is a couple of times of a healer or two trying to push out that one last damage spell while the tanks self heal is busted and CDs recharging and that's all she wrote. Newer tanks are gunshy from that point on.

Myself I dont really care one way or another I know Tanks and Healers come in good and dren varieties.

As to the kicking bit *shrug* I think that premades should stay out of roulette and go with PF instead.