Yeah. I am for the potions in loot, but strongly believe that the good stuff, the DC 25 and 30 and ability buffs, should be solely available through herbalism.
I can honestly say that herbalism has greatly fueled the dynamics of two of my characters, in totally different ways. I think its a great benefit to the team-work and role-play on the server, and care should be made to tweak until the happy balance is found. Potions of ironguts and bless have been great though. Love seeing them drop.