I have found that I will be working on upgrades, or come up with a plan, and forget what I was doing because it sometimes takes a long time to collect what you really need. An in game notepad would be really helpful to remind you which character you were collecting emblems for, or what buildings you were upgrading and for what purpose. Please consider something like this. Thanks.
You can use a non-in-game notepad just as easily, and it would allow you to work on your plan without having to have the game loaded and running.
I would prefer the devs concentrate on the game instead of being distracted by side projects like this.