In most other commercial games, when you pop in the CD, the game will give you the option to play, install, uninstall, or visit the publisher's website. SE4 only runs the installer, which is very annoying if you want to use CD's other than the SE4 CD. Could you please put something in SE5 like in the other games? Maybe with a simple installation/mod selector program, since it's likely likely people would want to have multiple patched Versions and mods of SE5 on their hard drive like with SE4. I'd be willing to modify my SE4 mod selector to select from multiple SE5 installations and mods when the time comes, so you could use that
