I might have a go at tackling "Optimise images", "Specify image dimensions" and some of "Use efficient CSS selectors" in a later release
But for now I'm focused on getting fully deferred Javascript.
And I suppose "Parallelise downloads across hostnames" could be done fairly easily with some extra subdomains pointing at the root, along with some code to distribute downloads across them.
I dunno about 100/100, but ticks across the board in the Page Speed Firebug addon is good enough for me