Zabbix is able to have generic graph by associating a graph to a template.
It would be really interesting to be able to generate a "generic" screen by defining the template:test, ans say, for exemple (2 cols per row, n -rows), so that the screen generated will contains all the graphs generated for all hosts using this template.

Ex :
I define a template "Template_custom", I define an item "cpu load" and a graph "cpu load graph" associated to the template "Template_custom".
When I link an host "foo" with the Template_custom, a graph "cpu load graph" is generated for host "foo".
When I link an host "bar" with the Template_custom, a graph "cpu load graph" is generated for host "bar".

I would create a screen, say "displays all 'cpu load graph' of hosts linked to 'Template_custom'", and that's all.

My idea behind this is to be able to have a fully automated process (discovery -> action -> link to template(s) -> generate graphs -> display graphs in a screen, so that I always have a screen "cluster server CPU load" with 1 graph per server.