If there are two turrets per set, I'll buy one set to go on the 2002 Saga Gunship, as the Space Whale Gunship never had the ball turrets in the cartoon, and the green ROTS Gunship is pretty much EU, so it doesn't matter to me whether it has them or not. If there is only one turret per set, I'll buy two sets, but no more than that.
What would be nice, however, is if either way Hasbro included extra regular Phase I Clone Trooper helmets (non-pilot) for the two Clones, so that way folks who buy more than 1-2 sets would not be stuck with a million Clone Pilots and nowhere to put them. Not that we still wouldn't be stuck with millions of Clone Troopers and nowhere to put them, but at least we'd have options.