Currently, if you wish to retire your leader at any age before 15 years, it will cost you a fee of 10 GB.

I propose that there should be a scale of cost:

If your King is retired at 15 years it is free,

At 14 years of age it is 2GB

At 13 years of age it is 5GB

At 12 years of age it is 7GB

At 11 years of age it is 10GB.

Each year in your King's life is 12 days, they start at 3 years old, which means you have them for 156 days until you can freely retire them which is over 5 months.

The cost currently isn't an issue to established players who have studding/trading/lions who sees 10GB as chicken feed and often switches King etc, but it is a restriction to early/casual/new players who struggle.