No, what chasers need is a proper chaingun like all the other Tribes games (unless you have autoaim like phan). And a grenade that is much more difficult to use, but does more damage and is slightly more spammy, so you can run intercept routes and spam the cap/rabbit route.
Even so, asking chasers to get within midair and hand grenade range is completely unrealistic in Legions, and was even easier to accomplish in T:V even with the grappler. Of course chasing in Tribes, and Tribes 2 Classic is very balanced and plays well.
Videos like phans, "Explosions in the sky", give a completely unrealistic spin on chasing, because if you're not hitting those very low probability midair shots the guy is capping.