I personally disliked both of those playertypes; they, to me, seemed a little over-the-top.
Now, of course, 8x cube height jumping is still over the top, (pun noted, not intended) but not to that extent.
This I thought simply could be useful, and not too spammy or insane.
Oh, and to respond to mushroom man, I do not see how this could produce crappy rocket DMs in the near future. There are plenty of playertypes out there, many of which run faster than this, and a few jump higher. Did those produce crappy rocket DMs? I think not.