OK. Now that you put my nose in it I see it. Still not 100% clear on what's soldered on the the board and which are the add-ons but I might yet figure it out.
On a slightly different piCore alpha topic, it occured to me that the bulk of the boot process time is spent loading extensions. It also occured to me that there are "groups" of extensions that don't depend on each other, like X doesn't need networking (if you're not listening for remote connections) and sound to start. Anymore than networking needs X and sound or sound needs X or networking. Given that the PI2 is a quad-core, it occured to me that maybe some of these could be loaded in parallel. I realize this would be a big change from the current serial process, but it could be a big help in the long run. I can say from experience that make -j4 when compiling the kernel helps a lot on the pi2. The boot process would need to be able to call tce-load with different lists and start the networking tasks while the X libraries are still loading. The trick would be knowing when the last list was done (and didn't die for some reason). For a few extensions it probably doesn't matter, but for 100+ it would be nice.