On my tank, I always ask if anyone needs Drahga, else I prefer skipping him. He is easy with a good grp, but it is too dependent on RNG and can result in a wipe even with great grps. Most people prefer to skip him and I do not blame them.
About doing only troll dungeons for VP-well if you are close to the cap, it is actually faster to do a few old heroics than the troll ones if you can hit the cap either way. About getting kicked, well it happens, I have been kicked for asking the tank to wait so I could drink for mana on my healer. Just do not take it personally. As a healer you have a shorter queue than most after all.