• pay attention to vertex heats (directionally)
• use vertex heats to make wicked gradients
• everything is configurable (speed, whether to show gradients, etc)
• slightly nicer layout (hover over words to see them highlight on the board)
• nicer animation (leave a color trail of highlighted tiles)
• make it able to load boggle data async
• be social (twitter -- boggleheatmaps -- like button?)
• generate boggle solutions on the fly (if it takes too long, use workers + tweet/email when ready)

• Add animations for paths (3/15/11ish)

The data was generated using the code here.