Actually, if anyone recalls my post way back when, re: some specific issues I had with the interface/etc, here's a new update: I just downloaded/installed the latest maintenance update a few days ago (6.02 - I know, I'm a little late on this, the update came out early Feb).
* My issue with the Audio Performance pane is now gone, the labels and meters are on the same line again.
* 32-bit float now appears to be working fine.
* I have not had a hang/crash so far with 6.02 (used to get them a LOT on 6.0[1] when just moving markers etc).
* The information bar one-liners now appear to allow further width sizing to allow more time formats to appear while still displaying the desired parameter value.
* The whole thing runs faster on the same architecture, same projects - and my laptop stays physically cooler, further indicating that she's not being hit as hard now. In fact, The CPU load indicator generally runs oh, if I had to guestimate, about 25% lower in 6.02 than it had under 6.0 and 6.01, which leaves me more horsepower to use for actual work.
* I've also noted a few additions/improvements to the prefs menus, and so forth - most enjoyably the fact that the audio files prefs window now fits on my screen! It used to be too tall, and I had to switch to a different prefs pane in order to hit the OK button.
For any of you still running 6.01 and having problems, consider giving 6.02 a whirl. For me anyway, 5.13 was a real joy to use; 6.0 was a handful of hurt, and hit my machine pretty hard too; 6.01 still sometimes got downright maddening and still hit my machine pretty hard; 6.02 is actually enjoyable to use again, with faster user interface response and cooler operating temps to boot.
All in all, the people at MOTU in my opinion are doing a fine job fixing the little "oops-es" we've all been experiencing, and they seem to be trying to keep user requests/suggestions in mind along the way. Obviously not everything requested has been done, and some of it might not even be easily done. But it sure looks to me like they're trying to cover as many issues as possible. I for one appreciate their work, and the power of the diverse capabilities they've packaged into a single app for those of us who need it. Thank you, MOTU!