Since there is no english "Improvement suggestions" forum, I'll just put my suggestion here.
What I have in mind is something like this:
See, I don't have any need for the time buttons since you can put these in the toolbar. As for the date list, well I use keyboard shortcuts for that.
That's why I would really like to see the plugin view move to the right. I'd like it even better when there's a list of filters there aswell.
That way you can just click on one to see it take affect immediately.
I don't think that the "filter list" should look like the one in the picture (you cannot expand an individual filter so it shouldn't look like a folder IMO).
This is just a quick'n'dirty photoshop job, so use your imagination
What do you think?