I think the multiple clipboards are great. My only regret is that there aren't more of them. Three would be excellent. But having multiple is very good, both for the pattern of "paste one thing over and over again, interspersed with copying and pasting other things" and for the pattern of "copy 1; copy 2; paste 1; paste 2" or "copy1; copy2; paste 2; paste 1" with only a single application switch.

When firefox screwed up the address bar so that the left-click/middle-click didn't work right was easily the worst step down in computing for me in modern history. Initially you could recover the non-chrome like behavior with a preference but they eventually broke that too.