Bryan,
Ok, at best his language is unhelpful, obtuse and confusing. But even so, why then say:
It is a desiteratum, therefore, that a reference to the Holy Spirit, corresponding to the filioque phrase in the creedal account of the spiration of the Spirit find a place in our confessional formulation of the eternal filiation of the Son
How can I possibly take the bolded portion to mean other than:
"the confession ought to be amended at the point of the eternal generation of the Son to include a reference to the Holy Spirit being involved in such generation" ?
I mean, that is exactly what the
filioque did; it changed the creed withe respect to the eternal relations, not the economic relations (which even the EO acknowledge) of the Trinity. If I understand Kline to be saying what you say with respect to this "endoxation" (whatever that is supposed to mean) and apply it to the same way that he speaks of the
filioque, then I am left saying that 1000 years of Western and Eastern theology is out to lunch, since they have been arguing (and a schism has been made) over basically nothing.
The more this is discussed, the more distressing Kline's statements appear.