Only show action icons on hover

I’d like to have an option for the icons on an item to only appear when I hover the cursor over it. Just like in LastPass and BW Web Vault.

What would be gained by having this feature? Personally, I’m not big on ‘gee-whiz’ stuff if it doesn’t add to the functionality of the program.

What would be gained by having this feature?

Using the extension would be a more pleasant experience. Not rendering unneeded icons might slightly improve performance.