The medals are a welcome addition but for those of us playing for a while, especially in same legion, there are a few medals we definitely won't be able to easily earn:

"The Lone Conqueror" for "Successfully invade 15 planets while you are not in a legion."

the odds of a player playing for a long time prior to the legions getting added would have successfully invaded that many planets while not in a legion.

I would love the reward bonus of that but I don't particularly want to have to leave my legion for over 2 weeks to earn that status for what I would have done ages ago.

"Eureka" is also frustrating as active legions could have all or virtually all items already researched in the lab. only way for someone in one of those legions to leave the legion and join another legion needing research

Plus. if you leave your legion (especially if you are a legion leader) you a) screw over your legion and b) you put all of your own planets at risk because you loose the legion bonus to defense, offense, and cloak. Even high ranking Dysionians might hesitate at that point.

And I agree on Eureka. I've spent billions of credits worth of research on it, trying to get a 36000 point formula.

the eureka medal is retroactive as the CT lab records who got each breakthrough. However the problem of limited breakthroughs per CT lab is a problem, perhaps a modification could be made to the medal.

Eureka
Discover a breakthrough in your legion's CT lab or be with a legion that has a full CT lab for over 2 months.

this way the high level legions, with full labs can still get the medal but it prevents legion jumping for medals.