THREADS about how someone is bad doesn’t mean they’re actually bad.
It’d be like if the NHL fired Gary bettman because there’s so much gossip about how bad he is. Sure, that gossip may be correct. But the NHL doesn’t have to answer to gossip.
They do need to answer to their bottom line tho. If bettman started hurting their business. He’d be gone.
Likewise with Aegir… if he hurt the business, he would get fixed. But fixing him because people don’t think he’s good isn’t how things work either. SG needs to fix him if THEY think he’s underpowered. Maybe they do think that and will apply a buff.
Maybe not.
The worst thing that could happen for everyone is for SG to start listening to the mob and ignoring their own sensibility 
I have faith that they’ll balance out the heroes pretty nicely. Given the level of balance in the game - that just about every 4-5* hero is useful in some way - I really do trust SG to make the right call here.