I'll try to explain this without a picture :)
Telecom DSL comes in at one end of the house. It's split with a Telecom installed master splitter and goes into the standard Telecom/Thomson router (it's a newer one but I cant remember the model number right now) and there are 2 laptops and a phone/tablet using wifi from here.
That's then connected to a Netgear switch at the other end of the house which has a Linksys WRG54 off it servicing 1 laptop and another tablet. This switch is wired to the HTPC in the lounge and to another Netgear switch in my garage which has my server and two games pc's.
This garage switch is then wired to another wireless router in my office which has another two wired connections and 1 wireless phone/tablet.
My printer is currently in the garage and runs from the server. It would be better in the house really, although I could do with another in my office. It's not pretty, it's simply grown over time as the house, garage and office are all separate buildings at different sides of the section.
I rarely need to flick big files around, the kids laptops can play anything from the server, the four locations where we have Spotify are all good and the two games machines in the garage are rarely used and are really only connected to the network for updates.
Given its all 'linear' the OCD in me is telling me to sort it out with a central location, but I'm also thinking if it ain't broke don't fix it. I have excellent access to both the roof space and under the house so that's no excuse either and everything is connected with either cat5e or above.
So what do we think ? Buy a bigger router/switch for the center of the house, buy some longer bits of cable and pull everything from that ? Or just leave it alone ?