Before responding to a few things, I need to mention something I noticed in the Sente help files. It now has DOI lookup plugin that will download the corresponding article if it is free, or bring you to the homepage of the article. As DOI's are widely used, I would really like to see this in BE. Crossref.org has machine-to-machine lookup tools - you can find articles by providing only the DOI, as well as based on other info without the DOI. As far as I understand, this means it is open for Bookends to use.
Again, this woulb be hugely beneficial for us 'soft' scientists who aren't fortunate enough to have PubMed. But the DOI links are finally providing a central place for access across the disciplines. JSTOR is in the process of assigning DOI's to collection, and almost every current journal now assigns DOI's. Having strong DOI integration would be hugely beneficial for BE I think.
Now to the questions:
Jon,
RE icons, I don't want to harp on this as its a minor point, but I'm suggesting folders for static and smart groups, with a differnt color and gadget icon designating the smart groups. As for a folder, as a folder is a collection of groups, an icon that looks like a few folders on top of each other would work.
I guess I should say just Browser. It is in Sente, and is in iTunes. Hit command>B in iTunes and you'll see what I mean. Not sure why I called it a keyword browser, except that keywords in the context of a browser would further help delineate and group citations in the browser.
In regards to editing fields in the list view, I'm glad to hear Be is going this way. I don't think this eliminates the Bibliography Window necessarily, but certainly makes the List view that much better - no need to leave the list view for minor edits or even new entries.
Gerben,
I would like more folder in folder organization in BE too.
The notes thing could potentially be very good as far as annotation. I use DT myself, but I can see this being handy. However, if we're talking annotation of articles, I would much rather work towards a skim-like annontation ability for PDF's rather than just appended notes. But this may well be straying too far from BE's function and purpose. I'm pretty attached to DTpro, so I haven't thought too much about better annotation capabilities in BE.
Critic,
I don't want to slam Sente as I think it is a fine product and I wish it well. I'll mention a few things that stand out for me.
1) While Sente's bib.formatting is more intuitive, it has not reached the functionality of BE yet. For science guys doing simple in-text citations this is fine, but for those of us using Chicago-like bib format, Sente can't handle it all yet, at least not in the way BE does it. BE's abilty to ignore empty fields and clean up punctuation problems means BE formatting can handle more complicated formatting.
2) Closely related to the formatting issue, Sente still cannot do foot/endnotes. Again, for those in the hard sciences this doesn't matter, but it makes Sente unusable for anyone using footnotes or endnotes.
3) You don't get support like Jon gives from Sente - actually you don't really get it from anywhere. I've paid hundreds of dollars for software and I don't get this kind of support.
4) Sente works with Mellel, but not as tightly as BE. The scan and unscan feature is only with BE if I'm not mistaken.
5) I use the new linking feature of BE a whole lot. Sente doesn't have this.
6) Unless it is new to Sente 5, it does not have the spotlight search on just the attachments like BE has
7) I find BE's menu much more intuitive than Sente's.

you can't copy text from the PDF viewer in Sente.
9) Does Sente have a journal glossary? I don't think so.
10) BE is faster I find.
These are some of the main things that make me ever-loyal to BE.
~I swore to myself that if I ever got to walk around the room as manager people would laugh as they saw me coming and applaud as I walked away~