Does it actually tie into Final Crisis at all? Does Grant Morrison have any say in it? I haven't heard anything of the like. I asked for a reading order for Final Crisis on another site (including stuff (of his, but not exclusively) that ties-in, like Seven Soldiers, and that wasn't even mentioned. :p
Finished Volume 4 of Invisibles! Though strangely short, only collected 4 issues IIRC, the others are generally longer. Hmmm. My favourite concept though - each Invisible Cell (group - the titualr Invisibles of the book you follow are just one "cell" of many) base their group structure around elemental symbolism, and then every so often, they swap elements, giving them new roles in the group. I love. Reminds me of Final Fantasy or some joke RPG. Ragged Robin was Fire I think and generally floated about doing useful things in the background, but then she got Air (off King Mob, the leader up until now, who got Earth, the worst one), and she has to wear a leather outfit and lead the team in combat, being great. And Lord Fanny (<3) gives Water to Jack Frost, which could stun. Considering Jack Frost was too powerful being Spirit.
I know no one else cares, but it's my fave thing. I needed to fangasm.