Current implementation of services offers very basic ways to match tags. In some cases this makes it very difficult to differentiate eq. simple ICMP ping triggers between different host groups using same template.

Currently problem tags offer only "equals" and "contains". I'd very much like to see following to make it consistent with so many other places:

• besides the current options have: exists, does not exist, does not contain, does not equal. It would be even better if there was a way to match with regular expression.
• make it more flexible with: and, or, and/or, custom expression