Though a dissimilarity measure figures in the CVTree algorithm, it is not realistic to delineate taxa by using this measure at least for the time being.
L146: No need to explain the 6+2 if it is properly explained in the figure legend. Figure 3 is redundant. I would recommend to avoid presenting different versions of the same tree; just the final tree is OK (use final/valid labels) and all important explanations in the text or legend. Perhaps the whole reasoning in Lines 142–180 is not so relevant for the current objective of comparing CVT, LTP, Bergeys? Or, perhaps, define this objective more clearly.