what great insight...

I don't know about that. She might be a attunement type boss, in an Onyxia style raid.

I know she'd be guarding my front door.

Similar to the way saph has the key to malygos' front door.

Just as long as I don't have to mount vehicles to kill her, I'll be fine with whatever.

@Mindreaver:
I get what you're saying, but Blizzard has said they're done with attunements, which leaves very few possibilities for Sindragosa outside a boss encounter.

either inside, or outside, could be like EoE or something, maybe no attunment but she could have a lair up in icecrown where she awaits the lich king's call?

Done with attunements...

Oh ok, deleting my malygos key now...

They'll never be done. It's a storytelling tool. If she isn't a boss encounter (ie Saph 2.0, which would be fucking lame), then a stand alone encounter makes sense. An raid-wide attunement makes sure that nobody skips that part of the story.

Personally, I'd like to see her attack dalaran, and have her and the mages face off.

@ mindreaver

Agreed! lol

Vehicle combat is a new addition to WoW but i hope the don't overuse it. IMHO vehicles/ mounts for the Sin = Overkill...

One person needing one key != Every single person needing one key.

Sarcastic exaggeration? Highly uncalled for. You know what I meant by attunement, and one person of many needing a key wasn't it. I'd elaborate, but if you're just going to be crass, you can go look up the blue posts yourself.