It's designed to be used by developers, thus the access to an editor is great. Although I usually have the editor open anyway.
I find it amazing that so few people even know they can see the source so it saves some code by not making the browser do the displaying. Not sure what you mean by bookmarks not working, URLMP worked fine, even though it doesn't 'offically' know about Sunrise.
But that's no surprise, I guess many people still keep bookmarks in every browser they use.
As far speed, you could be right, and like Camino ( Safari, Opera, et all ), there are no extensions/add-ons so stuff like javascript is all or nothing. All I know is that a tab opened so fast that I thought it had crashed!
I tend to like programs that do what they are supposed to without a lot of features that are seldom used; keeps the code bloat down and usually helps them run faster with less memory.