I have always loved Chicago, but I still prefer the original version slightly over the revival. Probably that it was a little less minimalist. I have seen 8 - 10 Roxie's and still consider Gwen Verdon the best. I loved Chita, but thought that Bebe Neuwirth was even more special in the role, especially in I Simply Cannot Do It Alone.
On the other hand, I saw A Chorus Line 3 times in the summer of 1975...twice from standing room. Well, I liked it the first time, but was actually a little disappointed, given the incredible press. I saw it a second time pretty quickly (but after I had the album, I assume), because I figured I must have been under the weather. Same reaction. The third time I went was only because out of town friends wanted to see it and stayed in our apartment; we figured what the hell and got standing room. I am pretty sure you could get standing room in advance, but not positive when that trend stopped. In any event, boredom. Didn't see it for at least 20 years then...same reaction.
I saw Chicago only twice that summer -- once with Gwen, once with Liza. I loved it both times, and could NEVER understand how Chicago got lost in the shuffle. Donna McKechnie was wonderful as Cassie, but it was not a lead role. That she beat Verdon and Rivera seemed criminal to me and confirmed that the Chorus Line juggernaut left nothing in its wake. I suspect it would have won best sets for its line across the stage, had it been nominated.
I mention this because I started to finally feel vindicated in my strong preference for Chicago, never more so than when the first major revival of ACL, while a financial success with a decent run, was not critically revered, never generated much excitement, and received only two Tony nominations (including Charlotte D'Amboise for featured actress as Cassie).
I am hoping that, when the dust settles, even if it is doomed due to a severe drop in tourists, it makes it to 10,000 performance, and its one remaining creative is around to see that.
Ironically, while it is in my top 10 favorite musicals of all time, it is not in the top 2 or 3...I just like the idea 'the little engine that could' making it over the 10,000 finish line.