OK I have been running this ROM over the weekend and wanted to share my experiences for the sake of feedback if nothing else:
I started with the standard stock 2.1 Root and fooled around with that, installed the p3 LV 800mhz kernel and Overclocked with SetCPU. After trying that out for a bit then I did a data/cache wipe and installed this ROM.
I used the stock kernel for a bit but was unimpressed with my temperatures just doing standard stuff (while web browsing my temps would go up to 105 F or higher)
So I recently installed the P3 1 ghz kernel and I'm under-clocking at 800 max. I may swap to the belkit 1 ghz kernel with the same settings in a few days to compare. So far temperature is better. (comes out of sleep between 57 and 64. Doing some browsing takes me up to 86 or so, back down to low 70s when I return to Home)
My battery life wasn't amazing, however I did have the screen brightness all the way up (outside at the beach) and took over 100 photos with vignette. So I guess the battery life was actually just fine considering how much work the phone was doing.
I'm holding off on final judgement till I have used it as I normally do at home and work.
I've had a few issues with Gallery (sometimes photos will not rotate when I tell them too, sometimes photo albums do not show up in the list, some Force Closes while uploading to picasa and viewing photos at the same time)
I have had at least one acore FC while viewing a contact
Today I installed the Google finance update through the market. It downloaded and installed, then I got a phone call, had a 4 minute phone conversation, hung up and went to clear notifications from the notification pull down and the system rebooted itself. This is the first time that has happened (at least that I have noticed)
I've been using Settings Profiles and have had somewhat buggy experience with it (although that may be the program more than the ROM) Some profiles don't activate or deactivate according to the rules I have set up.
I am running Helix Launcher 1.4b (5 screen) I removed the standard Launcher.apk from the system all together, I also removed IM, CorpCal and Email system apps.
I have ATK, but I do not have it set to AutoStart nor do I really even use it to Kill apps, I check in every now and then to see what is running and what my available memory is. Typically after basic use I'll have 50-60 free with a few services running.
I have the Weather Toggle Flip clock widget, the 2.1 News Widget, pure calendar agenda and a few toggle widgets (power strip, included Nextheme MotoTorch/Ringer Widgets) Screen changes are smooth, no real slowdowns at all, I get an occasional Helix FC at startup, but choosing "wait" usually it resolves itself.
I get a 6.618 MFLOPs on Linpack running 800 max 500 min conservative.
I get 8.303 MFLOPs running 1000 max 800 min performance
Overall it's been a great experience, I'm very impressed, as stated above I've had a few buggy instances, but not really any more buggy than before I was rooted. The gallery issues are a little frustrating, but not a deal-breaker.