[O] Custom agenda search with variable?

[mediapathic steen]

I have a project named "clocks", and thus everything related to it across 
multiple files is tagged that. 

I have a custom agenda search that looks like

 ("C" "Clocks"
               ((agenda "" nil)
                (tags-todo "clocks/NEXT|DRAFT"
                           ((org-agenda-overriding-header "Next")))
                (tags-todo "clocks/TODO"
                           ((org-agenda-overriding-header "Todo")))
                (tags-todo "clocks/WAITING"
                           ((org-agenda-overriding-header "Waiting")))
                (tags-todo "clocks/RESEARCH"
                           ((org-agenda-overriding-header "Research")))
              ))

This same basic setup is something I want to be able to see for several 
projects. What I would like to do is have essentially this search, but in a 
form wherein I am queried for the project name (in reality, just a tag), and it 
gives me this search for that tag. Is there any reasonable way to do that? I've 
looked through the custom agenda views section on worg and didn't find anything 
that looked related.

(For anyone curious, I'm a writer, and "Clocks" is a novel. I'd like to be able 
to see a focused and sorted view like this for every piece I'm working on at 
any given moment.) 

Thanks,
-- Steen