It would be great to have more advanced GTM tag template with more functionalities, such as:
- event tracking
- goal conversion tracking
- ecommerce tracking
- custom variables
- custom dimensions
Such integration would be especially useful when someone wants to migrate from GA to PIWIK, but due to the extensive configuration in GTM, wants to stay with GTM. The point is to be able to easily replace GA tags with PIWIK tags in GTM.