Choose The Next Project

Given that we are getting close to the finale for both fics, Its time to start thinking about what to write afterwards.
I have a few ideas in my head, but I would appreciate if you help me decided, so I'm making a poll.
- Option 1: Harry Potter trapped in a time loop. This one I actually started writing it a long while ago and even posted some sample chapters in this side. It is called "All The Time In The World". Is about Harry being trapped in a time anomaly where everything is frozen. He spends there an extreme amount of time and when he comes out, he is incredibly powerful. 
The romantic pairing for this one would be Ginny.

Option 2: Starts as a more typical reincarnation story. A teenager from our world, who spent most of his life in a hospital bed with nothing but books to keep him company, ends up dying and finds himself in the shoes of Harry Potter.
The MC thinks that everything is going to be easy because he knows all that is going to happen and has years to prepare and learn magic that the original Harry never could. However he will eventually find out that this is not the normal Harry Potter world, but an alternate reality where all the difficulty has been ramp up to 11.
So every challenge that the original Harry had to deal with, now its several times harder.
Like instead of having to deal with one Dark Lord, there are now like seven of them trying to kill Harry.
Instead of having to fight one single basilisk in his second year, now there is an entire nest of them.
Something like that. I would call it, New Game ++. I don't know who the pairing could be, since it could be anyone.

Option 3: Harry is literally the reincarnation of Merlin. I was thinking something along the lines of...a badly abused child Harry starts to awaken memories of a past life, until something big happens and when his life is under threats, he finally recovers all his memories of a past life as Merlin.
But to make it more interesting, Voldemort would also be the reincarnation of another powerful wizard from the past. Maybe a rival to Merlin. The pairing for this one would probably have to be an OC character.

Okay, so what do you think?. Witch one would you prefer?. I am also open to suggestions, so if you have a cool idea, feel free to share it here.