This game needs a way to turn Gems into WE. Siimilar to speeding building times. I know there are flasks, but I just hate those situations where i have 7 WE and want to enter a 10 WE stage (or similar).
I will happily pop a flask when a have 0-2 WE but more than that and the waste stings too much.
So it is: inefficiently use a flask, wait a half hour l, or do something else.
My availability is limited and jt can be many hours between when i have time.
Obviously it should be somewhat cost prohibitive. It could even scale up to keep flasks valuable.
1WE = 2G
3WE = 8G
4WE = 16G
5WE = 32G
6WE = 64G
And after that you would save by getting a flask.