Hey Mark
My panels are the "Waves' branded variant of the Platform series that I picked up off eBay and flashed to the standard M+/X+/X firmware. I'm pretty sure that doesn't make any operational difference, Resolve sees them natively as M+/X+/X panels, but mentioning it just in case. They came with the Platform D displays... functionally identical to the later D2 displays as far as I know (just slightly smaller and consequently less well aligned, width wise).
Functionally, with Resolve, the attached Platform D/D2 displays seem to be, by default, pretty much limited to displaying track/channel strip labels only. If you're working with a lot a tracks and do a lot of track and bus automation banking, then that's pretty much essential, or at least well worth having. If you have more modest fixed track and bus layouts then a bit of masking tape and a sharpie will get you the exact same thing for much much less!
Some minor notes on how the displays respond to Resolve, depending on mode:
Hardware wise the D/D2 are a 2x56 character display, being 2x7 chars per channel strip... only 1x4 is used per strip for the track label.
In HUI mode, track labels are displayed on the bottom line with the upper line left blank. See image below showing M+ in HUI mode (displaying track bank 2). Arguably more aesthetically pleasing but the panels are more functional in MCP mode.
In the more versatile MCP mode, it displays the track labels on the upper line, with the lower line permanently showing the message 'MCP Mode Selected'... by default I don't see any way to have this display area used for more useful feedback. See image below showing X+ in MCP mode (displaying track bank 1).
In User Defined (MCP) mode, it displays the track labels on the upper line, with the lower line showing each track fader's 1x6 MIDI control code... if you're so inclined , I dare say you might be able to use a third party software (like Bome Midi Translator Pro) to have this area display human readable track level. See image below showing X+ in User Defined mode (displaying bus bank 1). This is the standard setup I use as I prefer the smaller footprint of the X+ unit (and used ICON's iMap software to change the function of the arm keys on channel strip 7 and 8 to act as bank left and bank right keys).
Hope thats helpful.
Andy