Why a battlecruiser-carrier hybrid is a poor compromise

How feasible was a Kearsarge-like battlecruiser and carrier hybrid in the late 1910s?

It could operate scouts, but the heavy, high superstructure and short flight deck would make it unstable and poor in combat; separate common-hull ships are preferable.

The Kearsarge-style reference is clarified as a proposed Gibbs & Cox hybrid with a flight deck between its guns. A flight deck above retained heavy guns creates a tall and weighty superstructure. The resulting centre of gravity would make the ship difficult to balance and especially unpleasant in storms. A useful deck would probably require removal of at least one aft turret, yet it would still offer limited strike-aircraft capability. The hybrid should avoid surface combat because gun action and battle damage threaten aviation operations. A more efficient programme would build a common lower hull as two separate ships, one with a full flight deck and one with guns.