Summary

• Add ability to assign tags on host groups
• Add group selection by tag in host navigator widget (maybe advisable)
• Add tag inheritance for hosts from it's groups

I use dashboard widget "host navigator" with grouping by host group. But groups set may be changed - therefore it will be necessary to return back to dashboard and edit selected groups in widget manually.

It is necessary to have a more flexible mechanism for automatic group selection, for example by group tags.

In general if groups will have tags and hosts can inherit it - this can do only using host tags and grouping by this tag value. Leaving field "host groups" empty (i.e. all groups), filtering hosts by tag name/value and grouping by tag.