Beyond customising the look, my first real dalliance with Alfred has been to re-purpose John Johnston's workflow for posting to WordPress.
I've made a slight modification to his script and added an extra action to open the new post in Safari.
There are still a couple of issues with items getting escaped in certain circumstances but not as many as the AppleScript I was testing. The workflow submits items as drafts so I can tweak before publishing.
Next, I'm going to see if I can combine the workflow with my original script to see if I can get it working via the REST API rather than XML-RPC.