The one you linked to I read quite some time ago and some of the cautions and problems they mentioned were no surprise to me.
Demand based reset of duct pressure SP is not new, by far.
And as I said back in 2006 in another thread that touched on the subject, it can work and work well.
But it does have issues and concerns that need to be addressed.
The problem with so called "rogue" boxes, for instance. Which may be VAV boxes that were poorly set up (programming/configuration wise) to start with, or poorly chosen, or poorly installed. Or which may be experiencing some sort of malfunction.
The possible causes and reasons, are almost endless.
Just in the past few months I've had to troubleshoot some example issues.
On one site, new construction, a couple or 3 VAV's experienced so much flow resistance before their inlets that one had to run an excessively high duct pressure just to overcome that problem. It was a combination problem of some darn poor duct work to the VAV's in question ... coupled with poor selection of where to physically locate them.
In another case, a problem with clogged pitots serving the VAV controllers flow sensors.
In another case, the lead balancer was good. As that particular individual usually is. However, his helper on that job .... sucked.
In yet another case, 4 of the VAV's serving cooling only purposes, were undersized for the real load to be handled and unable to maintain setpoint. They operated full open all the time.
Etc, and so on.
All of which can be identified and handled. That's no sweat. But it does take a bit more diligence, attention to detail, monitoring ALL of the system over a period of time, setting up trends and historical data ... and then actually ... really ... looking all that over to find the signs of trouble.
I didn't bookmark it, wish I had, but not long ago ... not more than a couple weeks ... I read a final report published by an energy auditing firm. They been hired to audit 17 buildings owned by the folks who hired em. (A government agency IIRC) All the buildings employed DDC controls and multiple demand based reset schemes, for air, water, etc.
Out of 17, they found 11 had quite significant problems that were causing them to save no energy or minimal energy from their reset schemes.
The firm didn't fault the reset schemes themselves. They faulted the implementation (programming ... in many cases they identified control loops that were too simplistic, which did not do simple checks to flag "rogues", etc.), and the follow up. By follow up they meant a continuing, regular maintenance program to identify and fix malfunctioning components, do regular calibration checks, etc.
Duct pressure reset CAN work, and work well. If done well. And if one periodically does what one needs to do to check over the system and find developing problems. And there WILL be developing problems.
Balancing the whole system out, fine tuning the control loops so one doesn't get excessive hunting of damper motors, valve actuators, etc can be a bit more demanding and time consuming.
Personally, I LIKE it when a system is so tuned that yah have to look close to even tell if a damper or valve actuator ever moves. Or the VFD display shows <= +/- 1 hz variations for long periods.
The overloading of the network with data? I'm not sure that's a big issue. How often are yah polling or making adjustments? Too often is not good if you're trying to obtain a smoothly operating system. Fewer swings in temp or air flow translates out to fewer complaints from the occupants.
I'd think that a lot of folks hanging around this site ought to read some of those PECI Functional testing documents. There are a ton of them. And they're handy. One might learn something, or be reminded of something yah forgot.