While I'm sure there's some complexity that makes it prohibitively difficult to implement, on the off-chance there's not, it would be great to be able to use Wikidot's simplified || content || table format to house code, or even [[include page]] functions linking to code. I can see a lot of scope for my own purposes for the ability to embed html (specifically random number generators) within Wikidot tables. I like the simplicity of the table format, and the look of the basic tables is great (I had a go at coding one up from scratch, and it looked pretty bad by comparison).
Just throwing that idea in the ring :)