My brother is level 37, has been playing for about two weeks and has opened maybe ten chromium packs (he's f2p), and has still not got a single character other than the generic ones everyone starts wi...
Based on my experience with other games, the moment premium characters gets accessible, the income from random packs die. At this stage of the game, I doubt the developers will want to do that. It also alienates their early paying players. It could happen probably 6 months down the road, and they roster the old premium characters out, and rotate in new ones. I am sure paying players hate having 2000 extra shards of Leia.