I know that skritter is primarily intended to be used for writing characters but i still feel that it would be a great help to also have character etymology added. I use skritter to help my doughter learn Chinese and I try to explain the components of each character. We both have the same need to understand what we learn. At a minimum it is important to know the radical. It might be just me but I strongly feel that it is much easier to learn a character if I first know the components. There are many sources for this on the net e.g.
http://www.yellowbridge.com/chinese/character-etymology.php?searchChinese=1&zi=%E5%9C%8B
And
http://www.chineseetymology.org/CharacterASP/CharacterEtymology.aspx?characterInput=%E5%9C%8B
I do have some old database data for a few thousand characters that I collected many years ago that can be used as a start.