A few more thoughts on Covenant Theology before I move on:
1. I probably should have mentioned in the previous post that I understand the matter of the continuity of the covenants to be a foundational building block to the system. Essential unity to the covenants reverberates through it all. If it falls, the system falls, as best I can tell. (I'm curious to hear if any CT'ers out there would disagree.)
2. This 9Marks interview with O. Palmer Robertson was helpful to me. It's been a while since I listened, but it might be a nice introduction to some of the issues from a CT perspective if you're looking for one.
3. Finally, if you're trying to teach people to affirm Dispensationalism, you are not helping your cause if you do not lead them to grasp the fundamental tenets of Covenant Theology on terms CT'ers would recognize. And I suppose the vice versa applies as well. Disdain is not an argument.
4. UPDATE: I just stumbled upon this, which is a helpful breakdown of some different positions, including one I'd not encountered.