If you want a divine caster that can cast suggestion, then look no further then the pleasure domain from the book of erotic fantasy. I don't care about deities or domain limits, just pick which ever two domains you want and go from there.
The pleasure domain + Spontaneous Domain feat is super funny. Spontaneous domain is exactly what it sounds like. For 3+cha mod per day, you can cast from your domain as a spontaneous spell, like a spontaneous cure that clerics can do. So you can cast suggestion as much as you can, not just once.
As for the druid, check out the shapechanger druid variant in the PHBII. It removes animal companion and wild shape for a more robust wild shape. At level 6, you can turn into a panther type and a large bird type as many times per day as you want. Which is far more flexible and interesting then wild shape.
There is also a item in the MIC that allows gear to follow through your wild shaping, so there is that. I don't recall exactly what it was, maybe a amulet.