I too have been thinking about the philosophy of a minimal amount of "design." After a certain point or certain amount of "design" I feel like we have to ask ourselves, "what's it all for?" I've been getting into more front end territory and have been delighted with how much HTML does.
For me, it's not so much about minimalism. I feel that minimalism semantically conveys, "the absolute bare minimum possible." Whereas I like to see the design goal as, "what is necessary to fulfill the required purpose."
Shameless little plug here, this is a little experiment I've been working on:
erictheread.org