Is there some inherent danger in using more than one mod that requires FOSE? All those scripts running in the background could cause problems, right?

Possibly but not likely, and very rare. About the only problem you might run into is if your processor is a bit on the weak side and your game slows down a bit. But most scripts don't really use alot of CPU resources so it's not really a big issue. There could also be the odd conflict but that's more likely to happen with just a basic esp mod. Scripts don't usually over lap each other that way.

nope, not really. they just depend on console and scripting functions the main game won't provide for them...

Cipscis once tested script CPU usage, and you would eed around 10000 badly written scripts to drop one frame per second. So don't worry

If there are a lot of scripts (or even just one badly written one) running that make use of FOSE's looping functions, you could notice a drop in frame rate. However, the only time I've ever seen scripts that are "heavy" enough to cause a drop in performance on their own is when I was running the performance tests that harmy52 mentioned. I've posted results of most of these tests on these forums (http://www.gamesas.com/index.php?/topic/987561-script-optimisation/) and, if you're interested in running your own tests, I've uploaded a template to Fallout 3 Nexus (http://www.fallout3nexus.com/downloads/file.php?id=11239)

If I remember correctly, your framerate is essentially limited by whatever aspect of Fallout 3 your computer is struggling with the most. Usually, this will be on the graphical side of things, and it will take a decent number of "heavy" scripts in order to decrease your framerate at all, with the exception of a few things like poorly written loops and multiple http://geck.gamesas.com/index.php/PlaceAtMe calls.

I would expect, all else being equal, mods that require FOSE and mods that don't require FOSE to have the same effect on your performance.

Cipscis