I was just dealing with this today and definitely understand your frustration. I've created a new feature request that you can vote on from here: https://forums.adobe.com/ideas/10566 the more votes an idea gets the more likely Product Management will push to have it implemented in a future release.
All of your points are valid. It is super frustrating to have the data right there in front of you but not be able to unlock it. Fortunately we do have a way to look this up on the back-end. However it woudl be so much more efficient if there was an easy way to translate id to friendly name directly from inside of Target.
I encourage you all to vote on the idea. Additionally if you need to we can find the segment friendly names for you via a support ticket.
Mihnea Docea | Technical Support Rep, Customer Care | Customer & Employee Experience | Adobe | (:: 1 (800) 497-0335