As Jay8g says: "I really liked the contributions link being directly on the discussion page so I didn't have to use popups or click on the username to get to the user's contributions page. Many users, including myself, have customized their signatures to include a contributions link, so the lack of this could make no-custom-signature pushback even worse." - https://www.mediawiki.org/w/index.php?title=Talk:Flow&workflow=rxtlvx7tsc2qqf1b#flow-post-rxu01n17td29mziw
The Special:Contributions link, after the usertalkpage link, in the flow-author line, worked really well. Please consider replacing it.