BTW, I just made this change on our mobile view, so that we would show the content author instead of the last poster. @youderian, how did the change work out for you?
<script type='text/x-handlebars' data-template-name='mobile/list/topic-list-item.raw'>
<td>
{{~#unless content.hasExcerpt}}
<div class='pull-left'>
<a href="{{content.firstPostUrl}}">{{avatar content.creator imageSize="large"}}</a>
</div>
<div class='right'>
{{else}}
<div>
{{/unless~}}
<div class='main-link'>
{{raw "topic-status" topic=content}}
{{topic-link content}}
{{#if content.unseen}}
<span class="badge-notification new-topic"></span>
{{/if}}
{{raw "list/topic-excerpt" topic=content}}
</div>
<div class='pull-right'>
{{raw "list/post-count-or-badges" topic=content postBadgesEnabled=controller.showTopicPostBadges}}
</div>
<div class="topic-item-stats clearfix">
{{#unless controller.hideCategory}}
<div class='category'>
{{category-link content.category}}
</div>
{{/unless}}
{{plugin-outlet "topic-list-tags"}}
<div class="pull-right">
<div class='num activity last'>
<span class="age activity" title="{{content.bumpedAtTitle}}"><a href="{{content.lastPostUrl}}">{{format-date content.bumpedAt format="tiny" noTitle="true"}}</a></span>
</div>
</div>
<div class="clearfix"></div>
</div>
</div>
</td>
</script>