If there was ever a totally unqualified opinion, here it is. A blogger for 6 weeks and change, this is my thought what a blogging tool should be.
Those who came here searching for the ultimate editor, I am sorry to disappoint, only ideas here.
To start with; I have tried WordPress online editor, Scribefire, Windows Live Writer and Drivel; and found them all lacking in one aspect or another. Currently I find Live Writer to be better than the rest. Trying out OneNote which has few features I like.
So, having laid the foundation, here are the features I would like to see in a blog editor.