The difference between Tangent and Palette is Tangent is actually working as an integral part of C1. Palette is kinda limited in it's interaction with C1. Palette is working on this.
There are some adjustments ,like exposure, that work OK. However, a lot of functions are basically mapped out keyboard shortcuts. I guess this is why I found the buttons to be most useful. The Palette sliders are useless in C1.
In LR, Palette works great. But bear in mind that to get the kind of immediate control, you would need at the minimum, the expert kit, and most likely the Pro kit would serve you better.
I just did some math. This is assuming that Palette fully supports C1.
A Tangent KB+BT will run you $1510.50 from BH Photo. Can be had cheaper on eBay.
The basic Palette runs $199. In order to add enough buttons and knobs to match the Tangent, it would cost you $1028.00. However, Palette has a limited number of modules that can be attached so I doubt it would work anyway.
Even if it worked, the footprint would be enormous. Each Palette module takes about as much space as four Tangent controls.
I believe once everything is mapped out, you would have very little need for the tool bar or browser, which gives you a much bigger picture to work with.
Now as far as the Wacom goes, I found that the brush adjustment is much easier with the Tangent MF. I use the tracker ball for brush size and hardness. The wheel that surrounds the ball, I use for opacity.
You could easily map out four knobs for all the brush adjustments.
I imagine you could map out the buttons on the Wacom and that would work out just as well for those adjustments.
As far as buying lenses goes, I understand.
However, I now look forward to editing the photos.