Did Gandalf have a Plan "B"?

[Raynor]

At this point The One stepped in and said, in effect, "You Valar had a good idea, but even *you* need to rely on ME to provide for the succor of M.E."

Did the Valar really lack the means to actually help Middle-Earth more though? They sent a few of their lesser order, and in a severely weakened form, and their mission was even more restrictive in what they could or could not do.

I certainly believe that were the Valar to show in the full might of their hosts, they would have trashed Sauron and all of his armies. Or take a fraction of that; scratch that, send one Vala, one is enough to get the job done.