"Remove sticky" is a must have on the modern web. Probably my most used bookmarklet.
A couple of others I use frequently:
Go to referrer. This fixes an infuriating missing feature in browsers, where links opened in new tabs lose their history (why?). Often this workaround will work:
javascript:if(!document.referrer)%20alert(%22No%20referrer!%22);%20else%20document.location%20=%20document.referrer;%20void%200
Open in wayback machine. For when you follow a link and there's nothing there anymore.
javascript:{var%20url=location.href;void(window.open("http://wayback.archive.org/web/*/"+url));}
I felt the same until I wrote https://arantius.com/misc/greasemonkey/fixed-only-at-top.use... which works automatically. Sticky bits are visible at first, disappearing only when you scroll down.
Remove sticky is also my most often used bookmarklet.
One that I also use regularly, related to your "Open in wayback machine", is "Save to wayback machine". That way it'll be there when you click it!
Love the "back to referer". You are right, it should be here by default.