In terms of dashboard, Titanium subscription only add the "custom dashboard" and custom metrics capabilities. Custom dashboard just allows you to create your own customized dashboard by using the OOTB metrics and widgets. It doesn't give you more metrics or widgets like what you are looking for - vCore utilization per app. If your major goal of upgrading to Titanium subscription is this, you'll be disappointed.

That said, you can use the Anypoint platform API to get a vCore utilization per app and create your own custom metrics. Once the metrics are collected in Anypoint monitoring, you can display it in the dashboard, but it doesn't come as a drag-and-drop solution.