So I was excited about 4.1. Like many others I've battled through the issues, worked around the work-arounds and hung on to the belief that Adobe would sort it out. And much is improved... the faster load on large projects will save me months of thumb-twiddling. And the re-instated still image export - welcome back! And congratulations on all those new features... tho' sadly I'm not a Red user. One day maybe.
Lots of hard work went into this release I am sure. But I am disappointed that no-one saw fit to fix time remapping. I raised it as an issue - even got Adobe to acknowledge it was broken - and got a promise it would be fixed in the next release. That was several months ago.
FYI - if you've not seen it - drag in a bit of video, and time-remap it to - say - 50% speed. Now add some opacity key frames within the clip to bring the opacity up and down. Now play the sequence. See what I mean?
So it's back to the nested sequence work-arounds and just a little bit more of my faith in Adobe chipped away.