Does it have all the same features of the default recycle icon?
Not yet, but I don't see why it can't once I add the finishing touches
The total size slider is possible, I'll look into it.
I am planning to have more than two visual states for the bin, ie more than just 'Empty' and 'Full'
What I need is images for states like 'Empty' 'A few items' 'half full' 'nearly full' 'full' and 'overflowing'
Then you will have the preferences options to define how many KB,MB,GB etc will be in the bin for it to show the different states. This will give you a better idea of how much stuff is lying around in the bin.
I would also like some kind of transparent backdrop to the text information for the bin.