feature req: change the first time run game options

[Maledictus010]

The problem:
Many games on Steam install additional stuff during the first time run (the first time the "launch" option is selected from the Steam games list after downloading). Examples of stuff being installed are Directx runtimes, Visual C++ runtimes, AGEIA/Nvidia physx software etc. The annoying thing is that many older games also have older versions of this software included. So if i run an older game for the first time that has an older version of the Visual C++ 2008 runtime included, this is installed next to my newer version of that particular runtime. This clogs up the system and can potentially cause problems for windows auto update, not to mention newer Windows version (Vista, 7) that have this stuff alread on board.

What i do:
After having downloaded a game i check the game's install folder and delete all the runtime and additional install stuff (unless it's not yet on my system, in which case i still delete it but make sure to manually download and install the latest version first). I can then safely run the game; no junk will be installed. Obviously, you need to know what you're doing here: you need to know what the installs are and whether you need them or already have them.
(sidenote: a problem seems to be that Steam then thinks that the first time run didn't complete correctly and will keep trying to run the additional setups for every subsequent game start. This has no negative effect, it's just annoying to see the screen pop up every time you start the game)

What i want:
Since i'm an experienced user and know what i'm doing i'm very annoyed by these forced installs. I have to take additional action to make sure that old installs don't mess up my finely tuned system. As such here's what i propose:
after a user selects "launch" for the first time, a screen is displayed that shows me which additional things will be installed (this is good for many reasons, not the least of which is that i will know what's going to be installed; currently it's always a big surprise). The screen should allow me to de-select specific installs (for instance by using checkmarks). For less experienced users it's obviously best to simply leave the checkmarks on, so the default should be "on" for all additonal installs. After having made the proper selections the user can click "continue" and the game will start; the additional installs screen will not be shown again. This also makes it possible to add this menu as a right-click option to the game's menu; this will allow users to re-install the additional installs if needed (an easy way for less experienced users).

Finally, it should be noted that all the additional installs should be up-to-date (which they currently are not). That would alleviate much of the frustrations, obviously.

Thanks for reading this, looking forward to reactions.