Ah. Using VoP and a level of Monk to lower the power of your Druid? That works. That's why I guess you aren't interested in Unarmed Swordsage, I suppose? There are other ways to lower the power of Druids, if you are curious:
Shapeshift Variant (Player's Handbook II)
Deadly Hunter Variant (Unearthed Arcana, SRD)
Druidic Avenger Variant (Unearthed Arcana, SRD)
Spontaneous Divine Caster Variant (Unearthed Arcana, SRD)
Spontaneous Affliction Variant (Exemplars of Evil)
Spontaneous Rejuvenation (Player's Handbook II)
Also, most druid prestige classes, except for like, two or maybe three, lower power and narrow focus of a Druid. Are you going for any PrC in particular to do that?