I don't think widshaped druids are meant to be battle powerhouses - if you look at the PHB they can only transform into fairly low CR creatures (CR1 at level 8, way above the EA level). Circle of the moon improves this, but even so the wild shape you can select is at best CR 1/3 of your druid level, so will always remain comparatively weak. I also think with EA being level 4/5 only, it is a litte hard to judge what the final wildshape options wil be. Assuming we get to level 12/13, that would be turning into a CR4 creature or elemental, which still wouldn't fare well against enemies at that level, although I can see situiational uses - like flying to a good vantage/attack point or turning into an elemental with some immunities etc
