Post war multi crew aircraft like the B52 have individual ejector seats and escape panels. An alternative to the above escape hatch is to have flat blast panels on the hull above or below each of the crew postions plus a larger panel for a survial pod that would be also ejected in an emergency - it would keep the sleek lines of the design and achieveable using texture and normal maps rather than require additional geometry - not saying it's a better design just throwing some ideas at the wall.