They are giving so much already. Xtals and nobs are their source of money right now. They only give them out during special occasions or inconveniences. Sending free ones would hurt their pay.
Well, if that happened the developers won't make enough money to want to update the game, and I like a constantly updated game. Also it will never happen, but I give you an E for effort.
Unless there's a way to put strenuous work for it, everyone will say it can be abused. I agree, there should be a different way to get xtals, but it shouldn't be a handout or considered entirely free.
You get 69 free ones from quests. They give free xtals when they make a big mistake. Pay for them or you don't get them fairly simple.