That's your opinion. You're entitled to it. I happen to disagree. There will be other things in her life which she will find equally fulfilling.

However, as this will never happen (ie. the 21st Phantom will always remain), it's a moot point.

IF and I say IF the 21st were to die (personally I would be happy to see this happen) you will see BOTH imo take over the role of the Phantom. I would prefer to see Kit alone take over the role but in todays equal rights world, Heloise would also get the role in a shared position....

Yeah, the characters have been written in such a way that points pretty strongly towards a dual Phantom arrangement, although they will never actually kill off the 21st (I don't think ). The strip is, and has always been, about the 21st Phantom.