I do love the re-design of Elketh's tower, all except Elketh's room itself. It used to be a dramatic showdown; there was an antechamber and then you did battle with the army of minions while the master stood nearby cackilng and unleashing his magicks.
I really feel the old design was more party-friendly in that it allowed folk to gather together for the final rush. Now, what we have is a tiny chamber into which PCs must proceed single file. More than once I have lost out because I was playing a support character who arrived after the lich was dead, or arrived while he was busy being invisible and soon dead. It's kind of a downer after all that trial and danger.
Can we please get a final chamber more like the old one, with a massive army of minions and plenty of time for the whole party to participate?