Two fliers, both ninos

+Atk -Spd
+Spd -Atk

Which i should Merge above other?
Based in every Seal we have disposal until now, and possibly builds.

My actual Nino is the -Atk with Fury
Having 47/47 without seals.
But when comparing with a +atk Ewyn i have, she seems to not add anything new at my army.
Also, the february update Will fix the bane. But which is preferably within the update? Recover atk And increase spd limit or recover spd And increase atk limit?
She Will be +1