The resto shamans could use a mod that would inform us when our earthshield has faded from the one we are shielding so that we can easily keep track of this and recast it. or it could tell us when earthshield has x charges left.
or if it would be included into buffalo or gotwood *dream*
1. Use Buffalo branch version
2. Make a container that only displays the earthshield buff of your focus unit (don't be afraid of Lua, it's not that difficult).
3. Put this container somewhere you can see it
4. Make a macro that sets your focus unit and casts earthshield with one click.
5. Recast when container vanishes.
6. Hope that Buffalo won't mess up with some ugly bug I haven't found yet.