I think the idea of a TP theme that installs automatically when you first install TP is a great idea. It could include 1 of each of the different types of blocks and the default article (I know one already installs now) and when if finished installing you'd be presented with a default look to your Front Page which would highlight all, or most, of the things that can be done with TP. It would automatically already have a Forum Button setup.
For instance, it might automatically setup 1 of each type of block (left, right, top, bottom, upper, lower) with links to your block settings and instructions on how to turn them off, etc. The default article on TP might include links on the TP site on how to do things like Adding a Forum Button to a custom theme, a link to the support board on TP, and other common TP questions, etc.
It might include a set of common blocks, like a user block and a stats block, and the other non-common blocks, like a block in the top panel might have content like "This block is an example of a Top Panel Block --- You can adjust the content of this block by going to your Panels and Blocks Settings in your Admin Panel".
Just a few ideas about it.