Board Thread:Questions and Answers/@comment-33071096-20171102142855/@comment-33728484-20171102153756

Those leaders are just support units, they're not going to benefit much from a SA level increase. Krillin is not hard to farm, though, you should have time to farm both his SA and the dragon stones you need, but personally I'd keep Great Saiyaman at SA1, because the effort is not worth it in my opinion.