I think that Amy Mizzi needs to come back to the bay and further develop her character, Kit Hunter.
I realise that none of her initial original family is left in the Bay; the Hunters as well as the Sutherlands are long gone.
But - Perhaps this is an idea that could work.
She could come back as part of the show's 30th Anniversary celebrations, as a nod to the early 2000s.
She could come in, not as a guest but as someone looking to stay back in Summer Bay as a longstanding resident.
As mentioned in another thread I forsee that she has had a messy relationship with some unseen guy off screen and she has come back to the Bay because it was where she was happy.
She gets drawn into a relationship with Joey (Kate Bell) who also returns to the Bay to allow the writers and producers to have yet another go at a same sex homosexual storyline.
But this will not be the thing that defines her character this time round.
Joey settles back into the Bay and her relationship with Kit in time is only a tiny faucet of her overall character.
PS. I just realised that I have been charting their return and not talking about their original stints.
Whoops! ? Apologies for going slightly off track.