I realize occasionally one is going to lose a planet. And if a person is smart, they will use a planet flux so that you cannot see it anymore. Problem is, would be nice to know how good that planet was, what you lost, etc.

So maybe be able for 1 week click the name (but not be able to do anything with it - share, attack, invade, or even see what was changed by new owner). This would be just a snapshot of what it looked like when you last owned it.

So yes the person took the planet and scrambled your system so it doesn't remember where it was. But I'm sure the systems remember what was on it, right?

Just would like to know if how good/bad a planet it was and what its resource gathering was.

When you have 20 or 30 some planets, its hard to remember what each one was.

In the event it would happen to me, I saw a clever comment from Kuren about it once and I followed his advice: I made a google doc with all my colonised planets and add their stats ... current production ... History (like last time it got attacked, or from whom I conquered it etc).

I recon it needs some work, but it's worth it.

I do it with an Exell document. I can set it up to sort itself the way I want to.

don't think I don't have that

This suggestion is for the 99% of the people that don't.