Yeah on a second take, I think most the times are extremly beatable. I was under the impression most of them were sub 2 minutes, but a lot of them are 4 minutes which I know for sure I could beat with sylvanis or zul'jin.
On a related note, it looks like its time for me to run through all the maps for that.
I'm totally down for moving now impossible times to a "legacy" section. I think it would be disingenuous to remove the times since they were done completely legally, however currently since its nearly impossible to break those records, it's unlikely that new runners would try to compete with them. By moving them to a legacy section, or some similar alternative (possibly based off of version numbers, like you said), It could help new runners to attempt the runs and compete.