Propose add Template:Hubs into Template:Main page as first template after info box, because it's very important hub for advanced users, which found specific information about the MediaWiki engine. This web site is not for inocent users. It's website for developeres, admins and translators of MediaWiki.
Today, I am tryed go to page Project:Translation/cs from my cellular phone. Mobile skin hasn't the left menu and it was very depressive for me, because I has problem find link, which I want add to the User_talk:Rebulka. I every finished on the anothers pages – Project:Language policy, or manual pages of the Extension:Translate. It's all right, but informations about conventions of marking isn't there. Page Project:Translation/cs is based on my experiences, and intended primarily for the beginners.
But it's not just about the translators.
My suggestion is very urgents, because from the time what MediaWiki.org the mobile design use, I am seeing a noticeable decline in new volunteers willing to contribute to the content of MediaWiki.org. And the main reason for this by my mind is that access to content important for hims is not as intuitive as it could be.