Whats the point after you reach level 70?

Shortly after I spent more money on in-app purchases, I reached level 70 and cant progress any further. So whats the point in playing now? Too bad, the background graphics were amazing.

Addendum. Havent played in almost a month. Its become pointless. Deleting.

JustOneMansHumbleOpinion about Contract Killer, v1.5.2