This request made me smile a little as the revid/guid revision ID/changeset ID column has been added and removed from that view many times since we started Kiln.
This is a little tricky because the revision number for a given changeset is subjective because it varies depending on which repository or clone you are looking at. In other words, the revision with guid changeset ID "asd123g" 8fa3c1" could be have revision ID 307 on the server, and 310 on your local clone of that repository. We found that this was getting people confused when they tried to use it, and also found that it was rarely being used.
Thus we ended up with the current design of only showing the guid changeset ID, and only when you are looking at an individual changeset (so it doesn't distract from the much more frequently used information in the current changeset view).
We will definitely keep an eye on this to see if some kind of consensus forms to change our current reasoning.