For my part, I agree with the original poster. I think that there are too many people playing the weaker demigods (in my opinion the weaker demigods are UB, Rook and QoT) who are being killed a lot by Erebus that are mostly upset by this. I think that instead of nerfing Erebus, those three other demigods should have been improved, since I think that Erebus was very much on-par with the other demigods. I don't feel weaker than Erebus at all when I'm playing Regulus, Oak, Sedna, or TB.
Well think you deserve a karma for actually understanding the definition of OP. The thing is with bite, it does too much for it's point investment. For 4 points it is esstienally better then a TB that invested 9 points to make fireball do 1350 and it's on the same cooldown.
This is a bad comparison. For four points, TB can get a 1050 damage fireball. Let's compare it to bite:
Fireball does more damage, has a very long range, and has a faster cooldown. Bite steals health and has a three second snare/armor debuff. In my personal opinion, fireball is far better than bite. It's true that you can spend five more points to further increase fireball's damage, but remember that you're getting an entirely second ability.
No other attack can do an effective 1800 damage in an instant on a 7 second cooldown. Combine that with erebus' already powerful mobility and durability due to his other abilties, and you got a demi-god that has a little too much going for him.
900 damage plus 900 heal is not 1800 effective damage. It is very good 1 v 1, where Erebus is likely to be getting attacked and have a lower health. But in group combat (most combat) where Erebus is not being attacked, the ability is just doing a flat 900 damage, which is less than other characters' damage.
Furthermore, bite is the shortest-ranged ability in the game, and this means that it can't be used nearly as often as other abilities. TB, UB, QoT, Oak, and Regulus all have longer-ranged, high-damage abilities which allows them to attack from safety. Only Pounce and Hammer Slam rival the range of Bite, and each has its own advantages.
As for the Bite debuff, I agree that it is good, but Oak's ability pretty much applies the same debuffs, but it can be cast at a longer range and the debuffs last much longer. I don't really think the debuffs are problematic.
But I can sympathize with some complaints. I do agree that the combination of bats and bite might be too powerful, and I think the best solution might be to increase the casting time of the bats ability. I also feel that stun in general is too powerful, and Erebus has the longest stun in the game. (Though changing it to an AoE interrupt, as someone suggested above, would make it useless). Further, I think that mist should be replaced with a completely different ability. As it stands, you get your full use out of it by putting in only a single point, and it's kind of a boring ability that reduces strategy.
But none of my complaints justify nerfing bite.