I do this as an encouragement for the rest of the group to not to stand in front of every pull for 1 minute and wait for someone else to do something (tank stays there, dps stays there not doing anything)... so I just use my droid cc or whatever to kick-off the fight. I can heal through most of these anyway.
Yes, I know this issue from both sides. I tank a lot, more than anything else in this game. I always go at a very fast pace and am often pulling the next group by the time my dps is about to finish one (I always run with healers that know I'm going to do this, I will slow down if needed for pugs.).
Sometimes I still get dps though that seem to want to lead, or that focus the completely wrong mob (not really a problem in FPs but can be an issue in operations). It's annoying but whatever, as long as they aren't dying and the healer isn't complaining I just do my best to keep the mobs controlled.
Now, when I'm dpsing, I'm sorry but it is terrible to get one of those tanks that stops to survey each pull for a decade. It literally makes a flashpoint take 2-3 times longer than it should. So I will get a bit impatient when that happens and start pulling, to force the progress.
Honestly, I just don't pug a lot anymore.