Mr Light wrote:
I was disappointed there wasn't a subplot about Shinzon and Romulus. I was looking forward to getting that situation fleshed out as well.
See Dave Mack's "Twilight's Wrath" in Tales of the Dominion War
And I'm assuming this isn't the first appearance of Nan Bacco, since they reference her meeting the crew before?
Actually it is her first appearance. Not every prior meeting of characters is actually depicted in a story (cf. Leila Kalomi, Areel Shaw, Philippa Louvois, Lenara Kahn...)