sure thing
as i said, self convinced developer who doesn't care to go thru test and acceptance...
you still haven't explained what exactly your wonder click would do, but i'll skip the small talk.
what you are thinking of, in whatever form, requires multiple joins on the "ignore list" table. trust me, from a performance point of view, no matter how good your "page writing skills" are, on any relational DB this is literally a killer feature.

well, let's look @ the sunny side.
when your plug-in comes, TMO will melt down & never be heard of again.
might eventually get somewhere