Thank god elves have only 2 formation and not being so useful to change it. Damn i hate micro situational management =P. Whats wrong with just changing to x position, why must they get also strong special bonuses?=). Beside loving how special each rase is and have 1000 little unique details =). Usually balancing kills uniqueness, hope that doesnt happen here =/. And taking my personal experience of "formations where you have to think more =)" (which have also biiiger impact), they are great.
Picture made by Aametherar the orc
Glory to the elves!