Instead of just saying for the costs to increase, explain why. Because here is the argument before you even explain.
My way.
You play an unupped monument for 1 quanta, you get 2 quanta at the end of the turn, total gain is only 1. But no initial benefit.
You play an upgraded monument for free, you get 2 quanta at the end of the turn. No initial benefit.
Your way.
You play an unupped monument for 2 quanta, you get 2 at the end of the turn, no gain at all. No initial benefit.
You play an upgraded monument for 1 quanta, you get 2 at the end of the turn, total gain is 1. No initial benefit.
So, making the costs 1 higher than what they are, why would anyone want to use this card if it was ever made.
But I'd like some sort of explanation before I go and alter the card.