Thank you for the review! Rearranging widgets is the main feature we've started working on, it should come out in the next few months so that should take care of it :)

For now, you can add this piece of CSS that will hide all widgets and center your quick links: https://bonjourr.fr/css-snippet#links-are-all-i-need

As for quick links icons, you can in fact change them. You need to upload your icon somewhere (like Imgur) and then put the direct link to it in the third field when you right click your quick links. I'll admit that it's not the most straightforward thing though, and we will improve it eventually.