The tag improvements are a great help; thank you!
And…
For those of us who are hardcore tag users with hundreds (I think) of tags, who apply four or five tags to nearly every note, the multi-column Tag Editor is still sorely missed. I used it in both the Alpha and the Note Count views, which made it easy to spot mistyped tags or tags that proved to be unhelpful. The single-column flyout is good for maybe a hundred tags, but it bogs down for heavy users. I'll make do with it, but even on a Retina 27 inch screen it's hard to consolidate tags in this view.
So my request: please restore the full Tag Editor view in a future release.