Of course PAtrike, I suggest, although it may be insistent, here the boss and decide is you.
But I see incongruous, to my way of working that I have to change the Profit in the pool and then again in the Coins tab.
I await your solution or your no solution, I adapt to what you program.
The good news is that the next release will have a new setting for applying the pool profit factor to the coins on the Coins tab. This behavior will be configurable in the Options dialog, Statistics Settings section.
If you have more than one pool for a coin, the pool with the lowest profit factor will be used. Once the new version is available, please give it a try to see if it works like you had in mind.