1) I don’t really use TTG galleries much any more so haven’t seen this option before. It does sound a little difficult to implement but there might be ways to achieve this. On the feature list it goes.

2) A list of commented on photos sounds possible. Injection of comments into the photos would really require a plugin or a bunch of error prone scripts followed by some manual steps so I’m marking that as “not possible”. This overall feature request will need further consideration before I can implement it.

3) This is doable. I used to use one long criteria line but recently changed because of Lightroom’s habit of replacing characters in filenames that don’t really need to be replaced, so a smart collection can’t find the original files. I’ll see whether I can nest the multiple criteria lines.

Now that Lightroom 3 and Publish Services have been released you might want to consider using those to get metadata and selects back into Lightroom. Hopefully Matt C has something in the works to marry together Publish Services and his web galleries and offer the best of both worlds.

I do have a few suggestions / feature requests though. These are all from the point of view of the client response gallery although may apply to the highslide gallery emails.

1) Creation of collections for photos with option X selected
i.e. photos for which the client has marked one of the photographer defined options in the gallery

example:
Black & White: filename1, filename2, filename3
Sepia: filename4, filename5, filename6

I suppose this would be tricky because each photographers gallery would have different options defined. Maybe this could be solved by having a user prompt or external file for defining the options to look for in the response email.

2) Creation of a smart collection for photos that the client has commented on.
Would be handy to have a smart collection containing all the photos that the user made comments on
example: Comment–: can you please crop the extra people out.
Ideally the comments would get inserted into a metadata field in lightroom (i.e. the “instructions” field or something). I guess that is more than what could be done with an external script and would probably require a full on plugin… which might not be a bad idea because it would open up a whole new world of possibilities with brining the client comments back into lightroom

3) Listing photos in smart collection in a single line OR put them in a sub-row
i.e instead of creating a smart collection with a new criteria line for each photo put them in a comma separated list in a single line. That way you can customize the smart collection by adding additional criteria. As it is now you can’t add any AND criteria because that is a gigantic list of ANYs if you know what I mean. Alternatively you could put the large list of ANYs in a sub-row and set that sub-section to “Any of the following are true”. You know the same thing you get when you hold the option/alt key and click the + sign on a smart rule criteria line.

Hope that makes sense. If not shoot me an email and I can explain better and send screenshots.