After Palpatine became Chancellor, why not hedge his bets by getting DNA from Anakin and secretly cloning an army of super-Force-sensitive warriors pre-programmed to serve only him? A Sith master must always worry about their apprentice turning on him, and the Kaminoans were shown capable of programming genetic orders into their clones that could not be disobeyed. Plus, the Anakin Clone Army could be ready in about 10 years which would not be too long for his plans.

marked as duplicate by RedCaio, Jason Baker, BMWurm, Möoz, Jack B Nimble Jan 14 '16 at 20:38

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