Rippon, you make some wonderful points. I'm glad someone could articulate these points...
To be a thoroughgoing Calvinist one must accept Covenant theology. Otherwise, you're just fooling yourself.
There are too many problems, theologically, that arise when one attempts to impute, say dispensationalism, into the Calvinist matrix. You have a serious issue with covenantal language and reconciling the soteriological distinction between the Old Testament means of grace and the New Testament expression for starters. More on this below.
But everybody claims "Scripture" as the source of their authority don't they?
Say I'm a Barthian, I claim the Word of God. Say I'm a Classical Dispensationalist (a Darbian) I claim the Bible. Say I'm a Bultmannian, I claim the (demythologized) Scriptures. This list goes on and on...so we can't say that "Calvinsts" claim Scripture solely. Though that is the final authority for their system, they still must adhere to the pathways of their founder, Jean Calvin.
Though I appreciate the encourage to remain within acceptable boundaries, the truth is that if you claim to be a "Calvinist" you are following a system of theology developed by and proposed by Jean Calvin. Though Scripture is the ultimate authority for the claims of the theology, one cannot be a thoroughgoing Calvinist and dismiss points of Calvinism that Calvin made.
His name is on the theological system. It isn't so difficult to imagine that we must stay lashed to some semblance of identity if we claim the name/system.
JF is attempting to claim aspects of Calvinism for his system (wrongly denoting them as Doctrine of Grace) while also attempting to fuse a form of dispensationalist eschatology while also attempting to hold to a Warfieldian view of Scripture (I've picked this up from our interaction.) Well you can amalgamate any number of systems you desire, just don't call it something its not.
The Reformed circles are sort of like Baptists in America. Lots of conversations. Yet certain things remain essential.
The bottom line is you can't hold to three or four points of Calvinism, you can't change the system, you can't approach his hermeneutic dispensationally and still claim to be a Calvinist. Read
The Institutes and his commentaries, none of that stuff works with his system. Jean Calvin's theological proposal is rightly classified by Jacob Arminius (his greatest student) in the five points noted at Dordt. You can't get away from it.
I guess my challenge is, then, show me how, in all of Calvin's work, one can be dispensational and remain coherent with his theological prolegomena.