Interesting that you'd switch from Skitch if it had that feature set. I can't imagine a scenario where I'd ever prefer to hit, from a page I'd like a screenshot of:

    > cmd+l, cmd+c, cmd+t, sna, <down-arrow>, enter, tab, cmd+v, enter, right click generated image, copy link

As opposed to (skitch keybinds):

    > cmd+shift+5, click once in my browser window, click once on share link

Out of curiosity, what is it that makes the web-based workflow more appealing to you as a user?