Regarding sharing/viewing - how about a shareable (non-editable, view only) link for a rule?
Or possibly even add view and/or copy? (so a viewer can copy the rule into their own account)
And another method for at least viewing/displaying in forum - I discovered that you can already save the rule as a .pdf (just right click on the page and select ‘save as pdf’);
then if Sharptools could expand the ‘upload image’ to include .pdf files, then you could simply add it to any post on the forum.
Or there are many pdf to img options available from internet
(I just downloaded and used pdf converter from Windows Store for this example)
So this is do-able NOW, without any changes at all required.
This was very quick process -
Open (edit) the rule;
right click and save the page as .pdf
(no need to even open the pdf)
Launch PDF Converter tool and select the .pdf file
Choose your save folder and Convert
And you have high-res image file (you may wish to re-name it after save - it just gives it a numerical ID in the saved Folder)
post script - one thing I notice is that if you have multiple images in a post, then it shows a smaller version than full-size and clicking just takes you to next image; with a single image (as in this post) you can click on it, and initially get the ‘less than full’ size, but then click again and it will go full size. With multiple images, you have to open in new tab to see full size.