I have another idea for a sequel to the Ben 10 series after New Dawn

I have another idea for a sequel to the Ben 10 series after New Dawn where Ben gets a new watch called 360 Omnitrix. What do you think, and I have another idea where the current future is being canceled by a time travel from one of Ben's evil versions called Mark Tennyson and other ideas. Mark Tennyson decides to defeat all other Ben's copies of all worlds and steal pieces of their watches to make his super watch