Hey I have a story idea for you, if you like it.
I'm writting as it's coming so it might be messy but you know how Victoria (Klayleynoir) did a Hope time travel fanfictions well what if you did a Klaus one ?
It would start just after Klaus sacrifice himself to get ride of the Hollow and instead of going to the afterlife he's transported back to his season 2 version before he complete his ritual and so instead of capturing Caroline and later Jenna for the vamp sacrifice he made piece with Elijah, they team up and use Mikael instead for the vamp sacrifice so not only it means it'd be safe to wake up all the siblings but the mystic gang will not hate him as much.
I don't have anything else so it's up to you how to bring Hayley in the picture and how to fix TO's event but basically it would be a Klaylope fix it story where Klaus will from the start work on being a better person ( as in showing more care to his family and not being the villain unnecessarily) so he can be worthy of being a father + will not make the same mistake again by letting Hayley fell for Elijah or marry Jackson but will do anything to make her fall for him when she appear in his life.