There likely won't be a drastic revamp, the main thing we have done was give it a boost where the ability now deals 200 damage to vehicles, from 160 and will apply a Firefly-esque stun on vehicle-based units.
That's disappointing, I doubt it'll ever get used. The range is so low that by the time you'd even try to fire on a tank or even infantry the lefh will either be dead or unable to rotate quick enough to hit the target. Not to mention there needs to be nothing in the way for the shell to collide with.
I hope you will reconsider, getting a lefh to vet 5 should be rewarded with a useful ability rather than a highly situational and lackluster even if used correctly ability.