Some major alarm bells go off when I read about the Synthetic Model of Theology. I can definitely see the dangers of it, especially those listed on Bevans’ chart: Wishy Washy and selling out. I agree completely with Bevans that “openness is a good thing, and it cannot be discarded, but the theologian must always be aware of the power and subtle manipulations of a dominant culture…”. That being said, I can see advantages, but only in the right context and with the right Christians.
I think this model works best within a tradition, like catholicism, Quakerism, Methodism, etc – it requires an established community and wouldn’t work in an individualistic setting very well.