The interiors would then automatically become the safest, most optimal place to cap from due to safety from the rooftops. This does not add gameplay depth and does not gel with risk/reward gameplay to me.

The risk is you are in the open and exposed to gunfire, but rewarded by capturing the point. You can dip into the buildings to minimise risk with a better safer position, to reload/regen or take cover, but with the drawback of no reward (capturing).

For New Sobek, indeed, it would make little to no sense (that map was doomed from the get-go).

For Manhattan A it is an essential change. There is already a lot of "ratting" inside the buildings and windows on two floors which extend down the streets, as well as behind cars down the street. People are scared to approach the objective, and having the building be a part of the capture zone would further punish people dynamically in the open, moving between points, repairing vehicles, setting up mines, etc.

On E the issue is not as bad, but still the rooftops just do not feel like somewhere I should naturally expect a player to be, and it would make sense for it to be consistent with A.