Makes sense for them to leave the booster ones as they sell those to get people started on farms. Plus I'm sure a starting player who spends here and there would enjoy having a 4* Old ben, Leia, STH, and Luke ready to go. They're all quite good now with their reworks. As for the 699 crystal pack, I guess they're just leaving that there with the rest of the packs for those that decide to whale up right as they start playing.
I don't think they're leaving the packs there past CLS so people can farm for CLS, but more for people that are no where near close to unlocking him but might want the New Hope characters in their arsenals to get a head start on everyone else.
