The next build of SmarterTrack will alter the page title, description, and canonical meta tag for the community threads list page according to the tab you are on, the page number, search strings, category, and type selector.
Some tab selections will not reflect in the description, because they are not reachable by search engines anyways. For example, My Activity and Moderate don't ever appear to search engines, so adding custom descriptions for them doesn't really make sense.
For now, we're leaving the H1 tag alone, because we feel that updating something above where you're clicking in the interface may be a confusing for users, and the Community Threads label is intended more for section identification than the particular sub-view you are looking at.
However, it has spawned some additional discussions internally about the layout of that page, so we appreciate the suggestion and will keep it in mind for future development as we continue to address the portal.