Hi @kongondo,
and thank you for taking time to read my post ?
i'm speaking about the native ProcessPageEditLink module where we can store a few classes, rels and target for the end user to use when adding a link in ckeditor (and even add them, or not, by default, to external links, a very clever and useful feature...)
i'm just wondering if it would be a good idea to modify it to deal with dynamic data-attributes or if it is again one of my savage ideas :D
have a nice day
chris