Hi CaptDan!!
Plain and simple - if you're working successfully in PT10 - STAY THERE!! Keep making good music.
If you have a powerful machine with a lot of RAM and feel you "need" more power, than certainly upgrade to PT11 64bit. It's insane!! BUT.......remember, all of your third party plugins may not be 64bit yet, and then you will be mad.
1. Personally, I use the eq and compressors in the DM. That's why they are there, all 48 channels of them.
2. I use the automation in the DM - that's what it's there for. The HUI thing doesn't matter to me because I use MTC via the MIDI ports in the back of the DM, and just lock PT to the DM. Transport works just fine and I save all the automation with project.
3. I have three analog cards in addition to the firewire card, one card is dedicated to outboard gear. Another card is dedicated to summing out to my analog TL Audio Fat Track. Yummy.
4. I use the firewire card for the buss mixes coming out of PT10/11 into the board.
5. All of my synth stuff is primarily handled by my Korg Kronos 88 key monster going directly into the board, but my software synths are ALL 32bit AND 64bit. Komplete 9 and DCAM synth squad.
Just showing you how different my workflow is so I never feel obsolete, I do like the different metering options in PT11 and the offline plugin usuage - so if you have a track where there is no audio for a time (like a background vocal), the plugin is temporarily deactivated until the needed again, therefore saving CPU power.
There are many more. But - the more you use your DM, the less you'll feel you're missing stuff in the software.
There ya go.