Hey - I don't think there's a lot to comment on here as the forum follows normal Proboards in aesthetics and stuff...
In terms of boards - as you ask - I don't think it's necessary to have a Streaming board as well as a Television board. I don't really get what people would write in the former, that they couldn't write in the latter.
You've also mis-spelt Arctic in your The Landscape board.
When I read Theatre, I thought you meant plays and stage productions. Maybe I'm just posh. But perhaps one for Theatre, one for Cinema (I'm British so that's what we call them - an equivalent would work too lol) so that people can also discuss stage shows, rather than just the big screen?
I sort of feel like your Digital Box category is basically "The Arts" so I can't help but think that the books board should go in there...
I think the sub-boards in the Music board are unnecessary - you don't have every genre of music listed and it would be stupid to try, so I just wouldn't have any.
If you're not going to add the books and stage stuff to the Digital Box, and are just going to keep that category as digital stuff, I'm not sure why your Video Games board isn't in there...
Also - do people need the time at the top of your forum? If they're vising your site they'd be on a phone or computer or something that tells them the time in the corner. The only time I've seen a site use a timer well is by having an "admin" time - so that, if people are waiting for help from the staff team, they know if they're current asleep or whatever...
If you want more people to mozie on down and have a look at your forum, I recommend creating some advertising boards (I know you have one, but it reads like that's for member recommendations only) - that way people will come to you in order to advertise their own site and might stick around to have a look at yours
Hope any and all of this helps!