I imagine a lot of us will, at the end of this event, have some spare coins after getting what we want. Might I suggest you add some small rewards e.g. Vet or Expert packs for 10 coins  or smokes for 5 coins, that kind of stuff, so we won't feel like we're wasting what we get during the last few days of the event when we can't hope to make enough to buy another PCL or something?