Of course not, but that's what not I'm saying. I'm just saying that leaving Maul and Boba dead would be such a waste of potential, its just plain silly. In such a sense they did need to be brought back, and I believe the positives outweigh the negatives (or rather 'negative' as the only bad thing is the implausible survival scenarios - which aren't that implausible.)
Point but looking at it in another way, they didn't really need to be brought back either. Its not like the franchise would have just died without em.
I mean, think of it like this: