QUOTE(Uleni Athram @ Oct 3 2016, 09:02 AM)

Darth Maul alone was the only good thing about the Prequels for me. So much potential, so much untapped awesome potential..... IMO he should've survived and taken Grievous' place as Obi-Wan's main opponent. But then that raises the question of how Dooku would fit in in the scenario of Maul surviving, since having them both around violates the Ro2. Interesting stuff to think about nonetheless.
Personally, I rather liked Dooku, even his fight against Yoda(Just for the comic value. I remember watching it in a cinema with a friend, and we couldn't stop laughing at it. It's kind of sad that that fight was still better than anything in Revenge

)
And Maul definitely would have been a better choice than Grievous, though maybe have him go toe-to-toe with Mace Windu instead of Obi-Wan. That would have been such a cool fight.
I could see Sidious throwing a third Sith into the mix without any trouble. Part of his plan was that both Grievous and Dooku were expendable, especially once he's decided to make Anakin his apprentice. So if he's planning to kill both Dooku and Maul, all he needs to do is make sure they don't unite against him(easy enough given their characters) and he can just let the Jedi kill them, remain hidden, and recruit Anakin afterwards.