Bunnysmack

Hi everyone. I'm semi-new to the game. Never played in live, only have one character I've spent more than an errant hour on, my Blaster, but I'd also like to make a decent melee tank, in case my friends need that role in a team at some point. I notice that a lot of the builds here don't take a taunt power, and wanted to know why not? I thought drawing aggro was an important part of the AT's role on the team? This seems to be one of those areas where I probably don't understand what I'm not seeing here, and I'd rather have a decent idea of a build before I spend a bunch of hours to possibly end with a character I dislike. The flavor for the character I want to play fits StJ/Willpower well, but I'm struggling figuring out which powers are must haves for that primary/secondary, which can be ignored, and what power pools/ancillary should be taken. At this point I have a decent idea of how to build Blasters, but I have very little idea about how much durability will be required in order to take on a more front line role, and what powers should be slotted more heavily to accomplish that job.