Hey! So I made a Weakaura to display Rune Tap charges, activation and CD. Took me a while to finish, so I thought I'd share in case anyone else needed one.
Pictures, disregard the green/blue bars beneath, that's not not a part of it...
0 charges, CD on 1st. First will complete when bar is halfway, shield icon pops when ready to make it easier to spot.
1 charge, CD on 2nd:
2 charges:
Active with time left:
Not expecting any awards for my image cropping skills.
String:
http://pastebin.com/p6wjAhCe