I have been using WeBuilder for a few months and it's great, well done.
There have been previous posts regarding snippets, namely reusable parameters (tokens). eg: <option>New York</option>
Where "New York" could @1 or what have you. I think this would be very useful.
I recently had several rather large select lists, thats a lot of typing. The client also provided the lists.
Ok, no more ranting, here is something that might be useful, simple and can be implemented without additional code to WB.
I wrote a HTML page that provides a list of smart snippets. Driven by some javascript. Usable for select lists, tables or whatever. Once done you click OK. Incidentally I cut and pasted the clients list into a textarea and did no typing at all

Now returning to your orginal document, you can see the results of your efforts in the WB clipboard, so drag and drop or insert.
If you find this tool worthwhile I will clean it up, and add some doc.
Users of javascript can easily add more snippets. All you need is Internet Explorer > 6. It also works perfectly in WB preview so you don't need to leave WB at all.
The trick is simply to use IE's window.clipBoardData.setData("Text","SOME STRING") function.
Cheers