While I generally agree with Justin that spending time on SEO for campaigns is not a great use of time, you absolutely should have a basic playbook and fill in Title, Description and think about the structure of the names against your SEO. Social shares will use the meta data and OG tags. If you don't structure these properly, it will break things and look bad externally.
http://www.marketingrockstarguides.com/seo-for-marketo-landing-pages-1408/