Adding last poster to subscriptions list

[Daisy Johnson]

Hello! I feel like she of many questions, but thanks if you're able to offer any advice.

Is there a way to add the last poster to the subscriptions list?

I mentioned before that my forum is/will be a creative writing forum. On our legacy board we would sort subscriptions into folders (Owed / Not owed) to track where we owe replies. I can see that folders aren't in version 5 so we figured we'd just go by the name of the last poster. However that's not there on subscriptions. This is good, but it seems to just be the most recent notifications:




But the actual subscription list just shows the date of the update and not the person who updated it:



Is there anything I can do to add a 'last poster' column to the subscription list?



As an aside, though this is less important, do you know the ID/name for the avatar thumbnail in the first image? I altered it on the forum home page by removing the border from last poster wrapper avatar but I'm unsure how to find out the names of individual elements. Like this:

/* Remove border from avatar on forum display - START */
 .lastpost-wrapper .avatar {
    border: none;
}
/* Remove border from avatar on forum display - END */​

Thank you very much.