Seeing as though you (Public) have now raised the rates across the board (even the 6GB/90 day on 3G saw a $2 increase per month over the old LTE plans), why not bring back a little incentive to the consumer.
Totally free activation, pay for just the plan.
I would understand not having free-to-order SIM cards, because I wouldn't blame people spamming a system like that after these hikes (JK), but if you could waive/refund the SIM cost after activation, it would do a little bit of good.