Where?

Type in the hashtag to the search bar, or save the hashtag and click to get a forum dedicated tot he specific hashtag

Almost. If I type Destiny and Gaming into the search bar, I'll get the intersection of #Destiny and #Gaming. What I want is the union. Also, the search bar doesn't have a way to exclude tags. Finally, I can't save my searches, so I'd have to go type in my search every time. Basically it doesn't do the main things I'm requesting.

/facepalm At the top of the page is some tags, click on one, it has a follow feature for tags, customize your experience.