For T8 I'm concerned aggro would be an issue. You'd have to give him a little time to establish and with the dps check this would be difficult to do. Plus how would the clockwork dread get picked up? I think you'd have to have an OT to grab it, which would mean the overall same dps as a traditional attempt and maybe even slightly lower with lack of a Garuda egi dps and her contagion.

T7 would probably be viable but an OT would be needed for adds. And TBH I think it would be easier to heal a player. The MT really doesn't take that much damage if they are avoiding her aoe, which Titan cannot dodge.