I posted this in my linkshell forum the other day. This is what I aim for because I like to play it safe since well, some players don't have the proper weapons skilled up.
Pil/Bhisani/Ig-Alima/Anything with Adds that require an Ochain/Aegis Setup
Pt1) WHM COR BRD DRK SAM WAR
Pt2) WHM COR NIN/DNC RNG MNK PLD
Pt3) BLM BLM BLU BLU SMN RDM
Bismarck/Morta
Pt1) WHM COR BRD DRK SAM WAR
Pt2) WHM COR NIN/DNC RNG MNK DD
Pt3) BLM BLM BLM BLU PLD RDM
Anything that doesn't require a PLD (anything without adds/90% of all of VW)
Pt1) WHM COR BRD DRK SAM WAR
Pt2) WHM COR NIN/DNC RNG MNK DD
Pt3) BLM BLM BLU BLU SMN RDM
Drg, Pup, Sch, Smn, Bst, Thf, and Dnc are really optional jobs. If they fight takes longer than 5 minutes, bring a Smn, otherwise, I don't usually bother. NIN/DNC can cover dagger, Sams and Wars can do polearm, Sch can be done with someone subbing Sch.
Paladin's are another thing you either need or don't need. Most fights (the fast, zerg, non-add fights) you don't need, but if your group sucks, you probably need a PLD to hold it.
Two Blus can split up all spells needed to proc and is optimal for Blu procing in the easier zerg fights.
For the fights that require stunning specific moves, like Lethe/Norne arrow from Bhisani, Rashka's stance from the undead Hahavas, etc etc., replace one of the Blu with another Blm.
These are what I shoot for in my VW shouts. You don't always get what you want, and there are people you'll learn to turn away because they either afk, or don't have anything skilled up.