Not when you already have a decisive lead in gaming.
But if NL is unexpectedly strong in gaming, and games still respond well enough to the additional cache versus further clock speed regression (I'd expect large diminishing returns though), so that you can solidify the gaming crown by stacking another cache chiplet, then sure.
Seems pretty unlikely.
And I'd much rather have v-cache on both CCDs than 2x on one and 0x on the other. The frequency hit is small enough now that I'd have preferred AMD to have done this with Zen 5, but 2x v-cache likely hits the frequency hard enough that you wouldn't want to run both CCDs that way.