Add ability to modify source code rather than blocking it
Some sites detect the adblocker and set a custom p class that blurs text. The function of the adblocker would simply remove the class (unhelpful). If there were another box for modifying the source code, one could elect to have a specific class type modified at page load rather than blocked.
<p class="ad-blocker-custom-blur"> //blurs the article text
<p class> //readable article text
Example site with above issue: