multi-language support
This feature is really important, since the previous website was translated at least in 4 languages and we have a team of translators for more than 9 languages right now...
maybe with WPML extension since the current website uses that one already and some translations of posts have been done already. And export the strings as a .po file for the communication team to translate in transifex or similar.
Do not show the flag icons for languages, but names only.