Im talking about the one he posted a link to. Im thinking of getting one, or two...
Well someone please correct me if I'm wrong, but an RCA cable is an RCA cable. It's just a wire going from one connection to another, so unless the switches themselves are so cheap that they break with a little use then they should be fine.
By no means. The more low end the signal the more sensitive it is to bullshit. A bad switch box can MURDER a composite signal. By daisy chaining two of these things some unlucky systems might end up sending their poor composite signal through the OEM cables, then through a shitty switch, then through a standard interlink cable, then through another box, then another cable, then the TV. It might work fine, but I wouldn't count on it. There will be signal degradation for sure.
I have a lot of systems, and I do play them, all of them, but it doesn't make much sense for me to have them all hooked up at once. I can only actually PLAY one at a time, the others will just get dusty waiting to be turned on. The there is the huge amount of space this would take up. Never mind the systems, just the CABLES for 12 systems takes up a lot of space. Composite is fairly compact too. My CMVS and GC have a lot more shit coming out the back.
Also, the only composite signals I use are, I think, my PCEs (working on upgrades, I promise you), my HandiFami8 and my LD player. Everything else is s-video or better so F this composite shit.