I have never produced anything in Publisher that I have taken to a family reunion or anything like that. I probably will some day. But I have played with it quite a bit. It's a really nice feature. I think it's much underutilized by RM users, perhaps because the learning curve can seem a little steep.
My two biggest concerns with Publisher are that it produces endnotes per chapter rather than endnotes for the entire book, and that it only includes chapters that can be produced as reports from within RM. I wish it could include a chapter that I produce in Word. The 75 page book that I take to a family reunion every year is actually two different files. One of them is a DOCX file produced entirely in Word without any input from RM at all. It contains formatting and the mixing of text and images that simply cannot be accomplished by RM. The other one is an RTF file produced by RM and cleaned up with Notepad++ and Word. It is basically a descendant narrative report using the register format. I make it work, but I have written extensively of certain issues that could be improved - better control of white space and the spouse sentence, carrying certain people forward to the next generation even though they do not have a spouse or children, the XE bug, and the ability to include spouses of spouses and half siblings. I will be curious to see if any of these issues are addressed in RM8.
Another issue is the index. My manual DOCX file is not indexed at all. I need to learn how to do some automatic indexing for it. Manual indexing would be too time consuming. Indexing my DOCX file is on me, not on RM. And even in the RTF file produced by RM, I would like better indexing. RM does produce a very good Name Index and Place Index even though the XE entries have a bug that I have to clean up. But there is no good way to index information that appears in Notes or Description fields. Despite these limitations, I think that the reports from RM that I take to family reunions look very professional and are easy to read and use. I use the phrase "meets my needs" a lot, and RM does meet my needs for this kind of reporting.
Thanks for the comments. I am experimenting with various organizations and content to see what works best. For example, I used a medium sized family line, that I had "finished" researching, and followed the earlier listed template. It resulted in a PDF document about 150 pages in length for one family line. At this rate my entire family, with all lines, would create books totaling an enormous size. I thought that creating a separate book for each direct ancestor surname would work, but that has the concatenation issues you mentioned concerning indexing and endnotes. I will probably just try to cut down on content for the "readers" in my family, and offer a database to others who can use either a subscription, or the free, version of RM to review the data.