Which is exactly what happens 90% of the time in SW. You need ground vehicles (tracked, wheeled or legged) to push through the shield and deactivate its generator(s). Well, I'm glad to see this brain-bug is partially discarded. I've never heard of the "generator outside the shield" other than in one of two EU stories. The movies and other stories had them safely inside the shields, so this is an improvement. Judging from the dialogue in ESB, "It is strong enough to deflect any bombardement", even projectiles cannot enter. The only indication we've had of shield-entry in the movies, is through slow-moving ground vehicles. There's also the rebel fighter passing through the DS I's magnetic field, but that may have been due to the shield being aimed at stopping larger vessels. Either way, sounds good.