I didn’t see a way to show the number of replies to a ticket in the My Queue area, even in the custom columns screen. I think this would be be extremely helpful in order to quickly ID any requests that haven’t been replied to yet. Either a total replies, or maybe “last reply by” field, so I could quickly see if the ball is in their court or mine.
Yes this is coming in the next release. You’ll be able to add a column that shows the last updated time and also a column which shows the last customer update time. The release is planned for early April.