Reckless Abandon LLC
I believe it is the DM’s job to deal with any power creep. As they are the ones that allowed it to happen.
I also believe characters should not go too long without getting a small piece of coolness for their character.
Here is my intentional power creep and making sure that characters keep a coolness factor.
When a character reaches 4th level they may choose either a feat or a stat increase. whichever they do not choose, they will get at 6th level. The same goes for the 8th/10th level slots.