this may sound boring but i think it is't, because despite the upcoming free perl 6 book I believe its decisive for Perl 6 to have a documentation where you quickly find the smallest piece of info you currently look for.
My aim to do that are the perl 6 tablets, which im writing on for some while in German as well as English. Most useful parts are currently appendix A and B. Index A is a alphanumeric sorted list of all operators, methods and builtins in Perl 6 as well as some terms explained I use in the chapter texts. Its also used by the grok tool. Index B is a collection of tables (operators, meta ops, regex metachars, regex modifiers, sub traits....) where you can see corresponding items in one spot. Now the real greatness hypertext comes, if I crosslink it all together. So recently I'm syncing the German and English Index A as well as adding the last missing annotations in Index A behind the item name in round brackets telling to which group/table this item belongs. Of course is this enty linked to the table in Index B as well the item itself is linked to a part in the chapter where its explained in more detail.I hope later I could here do even more crosslinking.
Another effect from this: tables you can copy easier from the synopses (just convert to wiki syntax) and the force you to get the Index A complete. It has currently over 350 items but is still far from being complete.