Hey first off: Great site!
Now, I wonder if it would be possible to offer settings for the existing themes, especially for people with big screens.
So for example I have a feed where I mainly take a look at the images. The glossy magazine has 7 items per row on my screen which makes it kinda hard to skim through.
Choosing "blog blocks" makes it better but then it's quite big.
For me then in this case "glossy magazine" with 4 items would be ideal.
I know it may sound snobbish but if it's not too hard to implement it may be worth considering?