The problem with any drop bombs in Battlefield has always been that their velocity coming off the plane is slower all of a sudden, and they just follow their own slow dummy path and drop vertically too quickly. This is why you have to drop bombs really low and right above your target somewhat. If you had guided bombs, you'd have to have them fly straight and true, and follow the speed that the plane was actually going, and gradually slow down as it makes small adjustments to the target. And even more so, the pilot would need to drop them correctly for them to be effective... so you can't just highlight someone on your hud and just fire a guided bomb... it needs a lot more skill than even the normal drop bombs IMO.
But this kind of sucks to think of guided bombs... just leave them as normal drop bombs. Mavericks are plenty for taking out moving targets. If you want bombs that give more 'wow', bring in cluster bombs

. All hell would break loose at North Village, hahah.