diff --git a/app/assets/stylesheets/comments.css b/app/assets/stylesheets/comments.css
index 8f9b26172..2a5e47960 100644
--- a/app/assets/stylesheets/comments.css
+++ b/app/assets/stylesheets/comments.css
@@ -37,6 +37,10 @@
   }
 
   .comment__author {
+    .comment--system & strong {
+      display: none;
+    }
+
     .btn {
       font-weight: inherit;
     }
@@ -49,9 +53,17 @@
     .comment--mine_ & {
       margin-inline: calc(var(--comment-padding-inline) * -0.75);
     }
+
+    .comment--system & {
+      display: none;
+    }
   }
 
   .comment__body {
+    .comment--system & {
+      text-align: center;
+    }
+
     p {
       &:first-child {
         margin-block-start: 0;
@@ -95,8 +107,13 @@
     }
   }
 
-  .comment__event {
+  .comment--system {
+    --comment-padding-block: calc(var(--block-space) * 0.66);
+
+    line-height: 1.2;
     max-inline-size: var(--comment-max);
+    text-align: center;
+    
 
     &::before {
       /* Make up space for lack of avatar */
@@ -104,6 +121,17 @@
       display: flex;
       inline-size: calc(var(--comment-padding-inline) * 0.75);
     }
+
+    .comment__author {
+      a {
+        margin: 0 auto;
+      }
+    }
+
+    .comment__body {
+      margin-block-start: calc(var(--block-space-half) * -0.33);
+      text-align: center !important;
+    }
   }
 
   .comment__input {
diff --git a/app/models/card/eventable/system_commenter.rb b/app/models/card/eventable/system_commenter.rb
index 2bd4e88fd..73247d2a3 100644
--- a/app/models/card/eventable/system_commenter.rb
+++ b/app/models/card/eventable/system_commenter.rb
@@ -8,46 +8,22 @@ class Card::Eventable::SystemCommenter
   def comment
     return unless comment_body.present?
 
-    if comment = find_replaceable_system_comment
-      comment.update! body: comment_body
-    else
-      card.comments.create! creator: User.system, body: comment_body, created_at: event.created_at
-    end
+    card.comments.create! creator: User.system, body: comment_body, created_at: event.created_at
   end
 
   private
-    RELATED_EVENTS = [
-      %w[ card_assigned card_unassigned ]
-    ]
-
     def comment_body
       case event.action
       when "card_assigned"
-        "Assigned to #{event.assignees.pluck(:name).to_sentence}."
+        "#{event.creator.name} assigned this to #{event.assignees.pluck(:name).to_sentence}."
       when "card_unassigned"
-        "Unassigned from #{event.assignees.pluck(:name).to_sentence}."
+        "#{event.creator.name} unassigned from #{event.assignees.pluck(:name).to_sentence}."
       when "card_staged"
         "#{event.creator.name} moved this to '#{event.stage_name}'."
       when "card_closed"
-        "Closed by #{ event.creator.name }"
+        "Closed as “#{ card.closure.reason }” by #{ event.creator.name }"
       when "card_title_changed"
-        "#{event.creator.name} changed title from '#{event.particulars.dig('particulars', 'old_title')}' to '#{event.particulars.dig('particulars', 'new_title')}'."
+        "#{event.creator.name} changed the title from '#{event.particulars.dig('particulars', 'old_title')}' to '#{event.particulars.dig('particulars', 'new_title')}'."
       end
     end
-
-    def find_replaceable_system_comment
-      previous_comment, previous_event = card.comments.last, card.events[-2]
-      if previous_comment&.creator&.system? && replaceable_event?(previous_event, event)
-        previous_comment
-      end
-    end
-
-    def replaceable_event?(candidate_event, replacement_event)
-      candidate_event && replacement_event &&
-        (candidate_event.action == replacement_event.action || related_events?(candidate_event, replacement_event))
-    end
-
-    def related_events?(candidate_event, replacement_event)
-      RELATED_EVENTS.find { |related_actions| related_actions.include?(candidate_event.action) && related_actions.include?(replacement_event.action) }
-    end
 end
diff --git a/app/views/cards/comments/_comment.html.erb b/app/views/cards/comments/_comment.html.erb
index 9c41c81d6..800c44bcd 100644
--- a/app/views/cards/comments/_comment.html.erb
+++ b/app/views/cards/comments/_comment.html.erb
@@ -1,6 +1,6 @@
 <% cache comment do %>
   <%= turbo_frame_tag comment do %>
-    <div class="comment flex align-start full-width" data-creator-id="<%= comment.creator_id %>" data-created-by-current-user-target="creation">
+    <div class="comment flex align-start full-width <%= "comment--system" if comment.creator.system? %>" data-creator-id="<%= comment.creator_id %>" data-created-by-current-user-target="creation">
       <figure class="comment__avatar flex-item-no-shrink" aria-hidden="true">
         <%= avatar_tag comment.creator, hidden_for_screen_reader: true %>
       </figure>