Go to Labs and enable Custom Keyboard Shortcuts, then go to town! I changed a bunch of my shortcuts, for example an operation I do quite often is "select all unread, them mark as read." But I couldn't remember the shortcuts they assigned - they didn't seem mnemonic at all. I changed them to SU for Select Unread and MR for Mark Read. Bingo!
Go to Labs and enable Custom Keyboard Shortcuts, then go to town! I changed a bunch of my shortcuts, for example an operation I do quite often is "select all unread, them mark as read." But I couldn't remember the shortcuts they assigned - they didn't seem mnemonic at all. I changed them to SU for Select Unread and MR for Mark Read. Bingo!