Tribes is all about mad speed and skiing (not coerced teamwork, epic scales and big ass bases). QIX's failure to appreciate this seriously set the franchise back.
The momentum grapple hugely accentuates what makes tribes cool: fast, aggressive, PRECISION skiing. The grapple gives us yet another tool to push the boundaries of skiing/jetpacks.
Think of the grapple in the context of TRIBES and not some other game that none of us can play for more than a month (i.e. Quake, UT, garbage, garbage).
What's not to like? The grapple's skill curve will be significant. The grapple will add a very interesting element to a FIVE year old game.
Such additions are needed - very few of us want to play the same game again. Better graphics and T1 physics won't make T:V a success.