Agreed as well. As it is now, there is zero reason to separate the three actions, since there is never a point you would want to use Zwerchau or Redoublement out of sequence, or to spam Riposte alone if given the option of the other two.

If button bloat ever becomes a concern for RDM, merging these three into one button should be the first "purge" on the list, which would instantly save 2 action bar spaces.
(The second being to have our elemental skills "evolve" into appropriate Verfinishers after a combo, and third being to have Jolt II become Impact every other cast, which would save 3 more.)