Fwiw, the “swappable” aspect didn’t really pan out. Most planes require the battery to be in a slightly different place for balance and nobody wants to rebind their receiver to another plane. Finally, servos still have to be in every plane. If you went through the effort of swapping the power pod and didn’t want to rebind, then the only savings would be the motor and ESC.
However, there are a couple less obvious advantages of swappables. The first is that the power pod acts as an easily replaceable (swappable?) sacrificial crumple zone. It hits first on impact and since the fuselage is doubled up on most newer designs, the power pod gets wrecked but spares most of the rest of the plane. The second advantage is just uniformity of design. The swappable series uses just two common sizes of motors, so after you wreck your first (or second, or third…) plane, you can build another with the same electronics.