It seems like we're defining legacy here as "there are key missing members but they keep playing the old songs", rather than just "old and keep playing the old songs". For the first one....I was so excited to see the Pixies with Kim Deal when they reunited. It was awesome. I was less excited when they released their horrible new music, and never went back to see them after she left. However I am totally thrilled to be going to go see Frank Black play Teenager of the Year with all the original musicians from that recording this weekend. So I guess I am a sucker for reunions...but less of a sucker for extended reunions that wear out their welcome.
But all this has been covered by Ricky Nelson...and I do very much enjoy his Stone Canyon Band era.
If you gotta play at garden parties
I wish you a lotta luck
But if memories were all I sang
I'd rather drive a truck
X (US) was great when I saw them in the early aughts.