Seems to be a common pattern. Eg in world of tanks/warships, there are "premium" tanks/ships you can buy for money and which are slightly better than the free v

Seems to be a common pattern. Eg in world of tanks/warships, there are "premium" tanks/ships you can buy for money and which are slightly better than the free vehicles at the same tier. While they are decent enough to not reduce the specs of stuff people have paid for, what they do is boost other vehicles and introduce new ones, which over time has the same effect.