Why is there no forum for diablo iv we could discuss our hopes and dreams for it just a suggestion
Currently the D3 forum is acting as surrogate for D4. Thats where Bliz posts their d4 info.
Generally speaking Blizzard does not open a forum until they are at at least Beta stage. Posting on most Blizzard forums requires a game license. There is no license for it yet, hence no forum. It is also possible we won’t get one. There is none for Immortal for example.
If people wish to discuss D4, Blizzard CMs do collect feedback widely, including reddit.