Of the RPG trilogy I think Origins has by far the best plot. It links in nicely with the Brotherhood vs Templars storyline and has a great main character and setting. What put me off though was the level gating of quests and the lack of instant stealth kills.

Odyssey for me went to far down the mythology route and wasn't as strong as Fenyx Rising.

Valhalla had a great setting and the return of proper stealth kills but leans too far into the awful Isu storyline for me.

I'm hopeful they can return to the kind of playground seen in Unity and Syndicate where the challenge is to pull apart the small hideouts like little puzzle boxes and find the best route rather than just buff your stats.