I was thinking the same thing.....but as for the suggestion, I would say no. The reason being is that other events give out 7 event tokens, and event tokens are worth 25-40mil each, so around 280mil total, and a mithril coin is 1 billion....that's just too much -1
Remember:
Bronze: 10mil
Platinum: 100mil
Gold: 500mil
Mithril: 1 billion