A while ago, I pushed an note about removing Formatters, Top Signs & Skulls in the 3.0.0 update (You can check here). I also noted that I would make a separate plugin for displaying not just top values, but any placeholders in Signs and Skulls. And now, that plugin is finished. It's called VarBlocks and you can check it here. I'll make an auto migration feature in the 3.0.0 update of Topper to convert all settings to VarBlocks. The feature would be removed after the update, so if you already set Top Signs or Skulls, 3.0.0 is the only version you can migrate the settings. You can also try VarBlocks yourself and manually replace Top Signs & Skulls to the new plugin if you can't wait for the update or just want to try it.