We with my friend @shostak developed chrome app solution with inbuilt drag&drop solution.

You can get it on Chrome Web store

Its super-straightforward : you start an app, you have submit field and drag&drop field:



(You should not worry, because this submit field is simply the steemit.com/submit, though you may login without a chance your password would be compromised. )

Simply drag your images to the drag&drop field and wait for the download to complete. (Indicator will disappear after uploading is complete).

AWESOME! Now you have ready-to-go image, right in your Submit text field. You can upload more images as well.

We have submitted our extension to the Google Chrome Web Store, its current version is 0.1.

We have a roadmap with quite interesting features, and we are looking forward to build a really useful app. Please, upvote this post and let us know what you're thinking!