I've followed you here Jamey, but didn't feel I had something to add before - but now you're asking about classrooms! That's my 'cup of tea'
(since I'm dwelling in one at work...)
First, like others have said, you have to decide which sort of classroom it should be - lectures for older students with their own notebooks? Or is it a room for studies and experimenting? That decides the furniture and surroundings.
Personally I just love the classrooms in the Harry Potter movies - I would love to teach in one of those!!
And another thing, very personal though, I don't like the floortexturing - makes me feel a bit nervous
Couldn't you place a dark-green carpet in there instead, green is calming you know
And some nice pillows to sit on? Please?