Yes, I know what you mean. My install went like this.
Install a Caddx Security System (this was before the Elk was born).
Then later, install my Ocelot and SECU16I module.
Add a RLY8-XA relay output module to the Ocelot.
Hmm, I can control my garage door now that I have that relay module. Wire up a remote.
Hey, I want to monitor my garage door's position. Install an analog to digital converter.
Well, might as well get the NetCaller ID going.
Oops, ran out of serial ports, have to get an edgeport 8 expander.
Hey, I want to monitor my front door, get a camera and wire that in.
Might as well monitor the back door also.
OH, oh, need an additional 12 volt power supply. Get that installed.
Hey, I want to have my Ocelot talk to my Caddx, get a Caddx output module.
Well, you can imagine what my wiring closet looks like now with all those "add-ons".
In contrast on my friend's install, we made provisions in the wiring and closet to add all of those features (and more) for the future (his closet looks a LOT better than mine :blink: ). I guess it's always that second install where you get things looking good...