This is an interesting idea. Let's see if other need this as well.

This feature is called "Shared elements" in WebWave. Please contact our online chat support if you have problems finding it.

Would you like to be able to be able to select if a menu button is visible on a RWD screen?

This effect looks interesting. Let's vote.

I think the best way here is to let people add their own languages on top of the most popular ones.

This is an interesting idea. We will investigate this.

You can add a button with this function right now. You need to fix a button on your page and link it to scroll to an element on your page.

Please contact our online chat support for assistance if you've got any issues with this one.

we will investigate this idea.

Yes, we will do this soon. We're currently working to introduce inventory to our ecommerce. Once we're done, we will add more currencies available in PayPal and Stripe. Unfortunately, this inventory blocks the ability to add those currencies right now (some code level issues). 
Inventory should be available late February / early March, so stay tuned.

This is a very interesting idea indeed. Lets vote.

If you want to add custom code into your footer go to edit shared elements and add a HTML element there. 

If you've got problems, please contact our chat support. We will gladly assist you