Will the lieutenant still be unbeatable? It's kind of pointless for you to make the instance scaleable to a HARDER level if the challenge is already nigh impossible, if not completely so, already!
As for the other instances, I look forward to seeing new content (especially Iorbar, which I actually found a bit more fun than Goblin-town), as well as getting to run SG again at 85. Thank you Turbine!