Scott, I love the concept of your bookmarklets and how they work!! I particularly like the way that WP blockquotes the original and copies over the actual text of the tweet. Sadly after configuring it for use, when I cut and paste I don't get the actual tweet, but end up with a blockquote that literally reads "+document.title+" instead of the text of the tweet. I'm also using it in Chrome, but not sure what is going wrong that I'm seeing this quoted text instead of the actual tweet. Is there something else I need to configure?
I like the way your bookmarklet works compared to the https://github.com/pfefferle/wordpress-indieweb-press-this bookmarklets which work fine, but rather than do a full embed of the actual text in blockquote style, it puts in something like `[embed]https://twitter.com/ChrisAldrich/status/707313378268618752[/embed]` which WordPress then processes to display the tweet. I'd worry that if Twitter experienced a site death, that the content on my site would no longer show the original content of the tweet!
The third potential method of doing all this could be to use David Shanske's Post Kinds plugin https://github.com/dshanske/indieweb-post-kinds which provides the ability to create a bookmarklet that supports URL parameters using the URL http://www.YOURSITE.com/wp-admin/post-new.php?kind=like&kindurl=@url or http://www.YOURSITE.com/wp-admin/post-new.php?kind=repost&kindurl=@url where the variable "@url" is the permalink of the tweet. The post kind is then set appropriately as well as the referenced URL which then does the embed, but I suspect it's using the [embed] method, which again doesn't seem like it will work sustainably in a possible post-Twitter world.