Re: Why it is absolutely necessary to protect mosques from politicians
^ I see how you are viewing this situation and you have presented a plausible analogy, but I can just as easily say that obgyn or cardio or maxillofacial or pre-natal or out patients are all different departments housed in the same building called a hospital or clinic.
Even then each department will have an admin section a nurse to assist and doctor to be the decision maker and so on. All of these functions have a common goal which is to treat and provide welfare ... well there is a common goal in civil/legal/religious/ and social circles also ... this common goal should be Islam ... the operation of a harmonious life which involves all of these areas.
Of course within the masajid you have a prayer area where no other activity is being done at the same time as prayer, you can have a consultation area, a library, meeting rooms, class rooms, and so on. Affiliated to and linked with the masajid, but minding their own business, but joined in ethos and share a common goal. This is all I am saying.