Sidebar options

i would like to ask for modification of sidebar. Currently, the option to have sidebar appear on mouseover means the sidebar appear while the rest of the webpage is adjusted to be completely visible.
Would it be possible, to have option, that sidebar would appear over the content of the webpage, just like it happens when clicking on buttons such as extensions, customize and control brave, brave shields etc.
When you use the option that sidebar appears on mouseover and use sidebar extensively, the readjustments of webpage are very uncomfortable on your eyes.
As a second request, would it be possible to ad options for readinglist to be ordered from oldest unread down to newest, as opposed to the current situation where the newest adds are on top?
Thank you for your time and effort