Not sure if this was suggested before or not; I searched, but I couldn't find anything.

In the Reading List you are able to see when a new release is out by the order and the red chapter numbers. I could see this feature helping out in the Wish List, or the On Hold list.
In the Wish List, it would be helpful to see that someone has finally picked up a series, that the series has enough chapters to make it worth it, etc.
With this option in the On Hold list, users would be able to move series that groups have dropped from their Reading List and still be able to see easily if someone else picks it up again.

I know you can see the symbols for Wish List (and I'm assuming for On Hold too) on the Releases page, but since the Reading List has this feature, I thought it might be useful to have it for some of the other lists too.

I think it'd be nice to have too. Of course if you want to do it you can just make like a "WishList2" and set it as a reading list. you know, something on that sort.

O.O I didn't realize that the custom lists could be set up like that. I've never tried the them because I didn't think I needed anything beyond what is offered.
That would work for what I was talking about. Thank you! The icon thingy on the Release screen is the Reading one, but I guess you can't have it both ways. ^_^