Attack on Titan/Dune Crossover

So I am thinking of doing a crossover with these two series but don’t quite have a outline/story just yet. Here is what I do have however:

1. The Worms from Arakiss come from the Hallucigenia the worm like creature that is the origin of Titans in the series.

2. I am debating on making Eren be either Paul Atreides grandson through his daughter Ghanima and fighting his Uncle Leto II or his actual son and he has to fight his overzealous Aunt Alia who has subcumbed to Abomination.

3. Paul Atreides is the first Titan in the Known Universe. He became a Titan when he got swallowed by a Father sandworm and the Hallucigenia bounded to him, making him the Founding Titan.

4. The Ackermans are products of a illigetimate child from Duncan Idaho and a Titan experiment from the Bene Teliax

5. Instead of the nape of the neck as the Titans weakness it’s water, just like the Sandworms in the series-however some Titans can bypass this by hardening their skin making them practically immune.

6. Annie and Hitch I am debating on making them be Bene Gesserits.

This is what I got for now. If anyone has any ideas or thoughts please share!