Disclaimer: I have no experience whatsoever when it comes to Minecraft coding, so I cannot tell if this is possible to implement or not.
In 1.9, an animation was added to the hotbar to indicate when an Ender Pearl can be used again, as shown below:
This could be handy for wands in Lucky Island, instead of forcing the player to hover over them to read how many seconds there are left before they can be used again. Note that I'm not saying that this should replace the "X seconds" counter, but instead act as an extra way to tell the currently unusable wands from the others.
In 1.9, an animation was added to the hotbar to indicate when an Ender Pearl can be used again, as shown below:
This could be handy for wands in Lucky Island, instead of forcing the player to hover over them to read how many seconds there are left before they can be used again. Note that I'm not saying that this should replace the "X seconds" counter, but instead act as an extra way to tell the currently unusable wands from the others.