Support for keyboard navigation and autoplay options would be really good.

I love cu3er, but without the ability to use keyboard navigation, it's not possible to use cu3er on sites that require compliance with WCAG/WAI for web accessibility, which in many countries is a requirement for sites providing services to the public (such as Section 508 in the US, and to meet the Disability Discrimination Act requirements in the UK, and Australia has similar requirements).

I've discovered that if I click on the cube with the mouse, it's possible to use the arrow keys to move around between the autoplay and previous/next buttons, but it's impossible for cu3er to gain focus using keyboard navigation alone. Someone who was unable to use a mouse or similar pointing device, wouldn't be able to access the navigation at all.

The second problem is the autoplay, as it's not possible, if I'm reading the documentation correctly, for the user to be able to be able to disable cu3er (i.e. disable all animation, not just pause the current slide), which can be an accessibility issue for some users, as some users find animations distracting.

Having said all that, apart from the accessibility issues, cu3er's great, and it's the first time I've found something like this that's so easy to customise and use.