HoN is a game that has lacked a large selection of ganking heroes from the start. With the addition to orb stacking, carry heroes seemed to take up more space than they should have been allowed to for a long time.
Having a too-small selection of ganking-style heroes not only made carry-style heroes imbalanced, but also completely shifted the metagame into a turtle-style farm-off where ganking simply wasn't as economical as farming. That, and let's face it, matches were just a lot less entertaining.
Then they came out with Fayde. Then Bubbles, now Tundra and soon even more. As of current, I believe most of these ganking heroes are still being banned in competitive play- but it's only a matter of time before the bans run out and these heroes hit the fan. It's hard to say how all of these ganking heroes will change HoN in the long run, but one thing's for sure: Babysitters and Carry heroes are going to be shaking in their boots for the first time in HoN history.
Not shown: Fayde invisible right behind him
It seems like S2 is well aware of this, because quite franky it seems like there's no end in sight or ganking heroes coming out. Heck, even Gauntlet is supposed to be a ganking, anti-carry sort of hero. It's a shame he sucks.