Different Image directory name
An option to put all the images of current markdown file in a directory with current filename without the .md extension and _img suffix would be nice addition. I use this plugin heavily for my blog posts, it'd help me a lot.
I hope I can make the mdip_imgdir variable to take formats which allow embedding filenames in it. Something like let g:mdip_imgdir = '${FILE}_img
Img paste name
The PR #23 brought selection typing for image name, it should ideally fill same image names in alt text and image path.
These are very minor improvements, I'd like to work on them once I get some time.