Let's talk about regen :)

[nijn78]

Each tick is pretty much another heal, so yeah you're pulling another piece of aggro every 2 seconds or so

Most people don't know you can cancel the Regen buff off yourself

And that's a problem imo.
I've always played healers, even in a crappy old f2p mmo such as Fiesta, Regen did not pull aggro unless it was cast during a pull.
HoTs have always been my fav and I try to keep it on tanks especially when they're starting a pull, it's a habit and I'm sure I'm not the only one with a love for HoTs.

Asking tanks to take it off every run would get old x.x