Let me just say that "scripty" doesn't have to be antithetical to Smalltalk.
If I had a Smalltalk Apache module that I could plug in to handle various requests, and still log in to as a live image? That'd be better than any scripting language.
The modularity point is a good one along the same lines: I love the image, I just want it not to be isolated.
As for GPL-tainted stuff, that shouldn't affect someone who's just =using= the product, right? (I'm not but I've been thinking about it.) Unless one digs into the source code, one should be fine, yes?