<<I wonder if there are some more people out there trying to combine these two great platforms...>>
Technically, Palm will say that their (old, existing) OS does not support the TabletPC platform. It's easy to understand why they would say this. But since Palm appears to be migrating toward Microsoft's mobility products, future Palm products may (likely will) exhibit the interoperability that you are seeking. However, I know that wasn't your question.
I run Palm Desktop 4.1.4 (I think it is...) on my tablet, but I only port (synch)updates from my Tungsten to my tablet because I actually keep several desktop installations running simultaneously. Using the PDA as the change portal is the only realistic way to maintain consistent content control among all the desktops. For this reason, I've never been motivated to explore any "tricks" to compensate for Palm's appalling software quality.
Sorry not to be of any help, but my point is that maybe a different use pattern is more appropriate for you than trying to collect a bunch of tricks...?