Attached to this post is the version 2.0 beta of the Global Site Tags plugin and widget.
This version of the plugin is reliant on the 2.0 beta of the Post Indexer plugin, so please make sure that the post indexer is installed and is running before using this one. Version 2.0 of the post indexer will only start storing tags from its installation date, so any existing posts tags won't be included in the tag cloud for this plugin.
Any issues, please post below.
Note: Please use version attached here for testing: