One essential package that needs to work first before I migrate is "schroot". That way I could use a static "core" os and then seamlessly run a dynamic Arch in schroot (including X11 stuff) for big and complex stuff that would be horrible to try to build statically.
Ps. Oh by the way - if I ever had a say about a mascot I would vote for a Mr. Potato variant of Tux, but perhaps I am the only one that would appreciate such a pun Ds.