Thanks for the new mechanisms for selectively removing messages in my mailbox.
I recommend changing the 'Clear marked messages' link to 'Remove marked messages'.
In other utilities I've used, it is common to use 'Clear marked....' to mean 'erase the marks'. This caused me to be a little confused until I used the feature.
In this case, using 'Remove' in both 'Remove all messages' and 'Remove marked messages' seems like the 'clearest' way to let the commands self-document their functional behavior.
"The Iron Fish: The water is cold...but the fish don't mind"
...Jay Jenks, boyhood chum