The player's tier alters the K parameter for gaining ELO.
For that reason I have not yet presented it. The idea is that Master players will earn/lose at slower rate.
This is in general the rule for ELO.
When we start having representative elo scores we will set the tier levels!
Another solution would be to give a one time boost to some players. But I don't like that.
Anyhow, suggestions are welcome!