Absolutely a +1 for me.
GREP/Regex Styles is an absolute must. I create lots of nested list documents (bullets and numbering) with multiple styles per line, with various delimiters using brackets and stars. With InDesign I can paste in the text (with the numbers of tabs defining the nesting level) and my document is completely formatted. I have already bought several copies (VPP Store) of Publisher to play with, just to support you guys as a viable alternative to Adobe. I'd love to be able to start using it to completely replace InDesign and that the only feature that's stopping me.