I think it would be useful, if you could clone an entire group of hosts or use something like an "extended template".

Here's my usecase: I'm monitoring a couple of distributed sites in Zabbix which all got the same structure. One router, one UPS, one server and so on. So what I'd like to do is to create a new group for each site which includes the template for the router, template for the UPS etc. so that I only have to give the IP addresses of all the different components.

I hope you get the idea what I mean.