So, an installer than can be run on a fresh install of leopard? Not gonna happen, sorry. I've got much better things to be doing than tracking down the packages for the dozens of Leo updates and then adding them to a single installer.
So many different opinions on this project, everybody thinks I should do something different! Tomorrow I'll start a new thread so I can add a poll. Also might clear up confusion, because I've said a lot of different things in this thread.
No. Not an installer for all of the Leopard updates, that is what Software Update is for. Technically speaking, I do not see Software Update stopping working for at least the next 2-3 years. A single installer for apps and tweaks only that can be run on any Leopard 10.5.8 machine.