I got Aphrodite for my 1st SSR a few weeks back, so I have been running a water team with her, other water kami SR with 3LB,4LB lvl 80 illu as my main eido, and 2 SR water eido, and 3 rare water Eido. Then yesterday I managed to pull Fafnir and Dakku from the MJ gatcha. I'm thinking, since Fafnir can buff fire and water, I shoud use her for my main eido, then I won't have to use an all water eido team. Also, since she buffs two elements, I can put Dakku on my water team.

Any reason why I shouldn't do that?