Let me start by saying that Cliff's site should be read by every OS 9 user, he has some great TIPS and tweaks, however, take what works for you and leave the rest. His statement,
Custom folder icons have the same effect as a heavily fragmented hard disk.
Well, maybe that is true on a pre-G3 machine, but this statement is a little extreme for my taste on an MDD. I use a program called "icontools" where I can right click and "stamp" icons on my folders and make custom icons, and I would say I love this feature in OS 9. It has never impacted performance on my DAW (at least that I could tell) and I have seen the hell a heavily fragmented disk can do to a Studio mac... so I am not in agreement here... I have hundreds of custom icons, I like them
OK Now the Video Issue (requirement)...If you have an ADC Port, the Monitor you want is the Apple Cinema Display 23"
with the Lucite stand; it will yield
1920 X 1200 resolution in OS9 with no issues.
The Aluminum 23" cinema display does not work under OS9 at the higher resolutions, without loading extra utilities, and in some cases, will not work at the higher resolutions no matter what you do .
You can find the Apple Cinema Display 23" Lucite version for less that $175 on ebay (10% of it's original price), and it you have a DAW, you need a big monitor; since this is what you will look at all the time, everyday, it does not make sense to "cheap-out" on a monitor.
So back to the 9.2.3 thing... the monitor issues can be overcome, but I am on the fence about the benefits and I stuck right in the middle of this thread emotionally... If there were some "Real-world" documented success stories about it's stability surpassing 9.2.2 then I would try it right away (I do not have the energy or time to be the one to test it with a DAW setup) and unfortunately, I think many are in the same boat... after tweaking a system for so long... who really wants to throw a big monkey wrench in their setup, just to beta test... and if it fucks things up... well, now you have to remember how to get back to your last good working setup... So, clearly, setting it up on it's own Mac or on a different volume would make more sense.... but then you have to duplicate (or at least install) some core apps from your know working setup... again... this can be time-consuming. Testing it without real world apps is not really testing it, it's just looking at new eye candy.
Don't get me wrong,
Cliff is an OS9 genius !; and yes, I read his entire site back when this was first posted, but I was hoping for more modifications to the actual System and the Finder... the utilities don't really interest me, since I have found what works for me over the years. His "TIPS" are excellent and so is his knowledge of OS 9, but I am definitely not ready to re-learn OS 9 with a slew of unfamiliar utilities.... I will look thru them, when I get some time, as I suggest we all do... and make posts if we find an amazing ones

I agree with Chris that I don't see this as some new revolutionary jump from OS 9.2.2 to 9.2.3 (It's more like 9.2.2 "Plus" addition).... In my mind 9.2.3 would be the new Mac OS 9 that has a bigger footprint and has protected system memory that makes it almost crash-proof.
I don't think that Cliff should be put in the same class as just another utility programmer... he is clearly a talented OS 9 expert and I think he has created an awesome face lift for 9.2.2 that might be perfect for newbies... for veterans, all this new "stuff" may be a little overwhelming. I think a lot of what I mentioned is felt by others... that is why we all read the post originally, but no nobody tried it.