Hi Dario,
normaly everything in CMK is Rule based. No need to do same doings again and again 
There are many ways to classify devices so that the rules target as wished.
I am wondering a little bit why your cisco did not show all known services, for our cisco routers i get all infos without any additionally action, inclouding Fans and CPU
And… there is a little missleading point, that are not active checks