First off, what do you mean looks like the prophets from Halo 2? That middle guy might as well still be flying around shooting lazers at me while I fight off his constantly spawning bodyguard!
Also, a lot of people aren\'t fond of the vespids. Though, the main complaint I\'ve heard about them is that they dont look good...Since when does every alien in the futuristic universe have to be pretty? They even plan on making the orks look better! Don\'t! I like my aliens ugly and my Space Marines with sticks up their butts!
One of the options I\'ve heard for substituting vespid models is to make a \"Jump pack tau human auxilary\" unit. Which seeing the concepts for this substitute on the DakkaDakka forums, doesn\'t look half bad.
However, I can see all the new models as fairly mangafied (Which is what Tau were based/designed upon!) including the vespids. Hey, there\'s always some butt ugly guy or alien out there.