The inboards on the Hastings were 'throttled back' when dropping paras and then increased again on the 'troops gone' call. This posed problems for the despatchers manually trying to retrieve the bags ! But at least the paras did not cross behind the a/c.
On the Hercules crossover and collisions was always a problem on side door exits which despite some less than clever schemes was never solved. It was accepted by the army as an occupational hazard. Over the ramp jumping and other airdrops were not a problem.
It sounds as if the A400 has more severe problems. Perhaps someone could enlighten us.