I did some quick research and If I'm understanding correctly it is possible to change the subject of a bumped WSO.
It has to be done by a Mod.
So how does that help anything?
Well, I remember back on the old forum if we wanted a title change, a $5 brew to the right Mod would do the trick.
Maybe something like this could be done here.
With Allen's approval of course we could send a $5 or whatever payment to a chosen Mod and get the title changed. After that we could bump the WSO. Or maybe Allen will put up a payment feature for a bump and one with a bump with title change.
That way we could test new Subject Lines while maintaining our post/comment counts.