I can imagine you're missing your Pro -- now that I have one, I can't imagine doing my work without one! And I'm not a power-user either; most of the CPU gets donated to the folding@home team, but all of the single-threaded software really benefitted from the boost going to the 3.33 chip.
We're all looking forward to a new Pro, I think, even if it's just so we have confirmation of Apple's continued interest in their pro-level equipment.
If/when the new Pro debuts, I'll be looking out for your words of advice on mods!
Yeah - I upgraded mine a few months ago and just transcoded 375 blu-ray rips via Handbrake to m4v's for ATV3! I used a Mini server I have as well to work in parallel and the difference was huge. The Mini was almost twice as slow and ran CPU temps of 90C or higher even with the fan screaming. The Pro ran CPU temps of 60C (or less) with all 6+6 cores rocking and the fans barely ramped up. The GPU fan would kick into overdrive once in a while (assume the PCI bay got pretty hot). If I had done all of those with the Mini, I would have probably reduced it to radioactive slag - the Pro ran 100% at a duty cycle of probably 95% (final muxing in HB doesn't stand on all of the cores) 24x7 for 2-3 weeks. I had to turn down the AC in that part of the house due to the heat thrown off