Some new notes:
* I started a new install from scratch. I used the SonyVaio.dsl file and Chameleon Wizard to compile a proper DSDT.aml. Works like a charm with my 1600x900 panel, but brightness is somewhat reduced from the non-accelerated state. I used the "HD4000PlatformId=4" boot flag. Using the value '3' did not work for me.
(+) Interestingly, I was also able to boot with the GenerateCStates, GeneratePStates, and DropSSDT boot.Chameleon.plist entries.
(-) However, upgrading my version of Chameleon via Chameleon Wizard to a version newer than build 2013 broke my install. To fix, I booted from UniBeast with GraphicsEnabler=No, then reinstalling the HD4000 version of Chameleon.
* Interestingly, trackpad support off of UniBeast doesn't have two-finger scroll or tap-to-click, but it does have "physical" click and side-scrolling. I think the optimal solution is some combination of the two; perhaps a different VoodooPS2 configuration file is needed.
(-) Clicking on "About this Mac" with either the 8,1 or 9,1 MacBook Pro SMBIOS.plist files results in a crashed Finder and a login screen
(+) Upgrading the half-height MiniPCI-E WIFI card to an AR9280/AR5B91/Dell Wireless 1515 works like a charm in all 3 OSes! You just lose Bluetooth support...
(+) MultiBeast's TRIM Enabler seems to work nicely
What I may try to work on next:
* DSDT edits for Realtek audio (I have to look up in Windows or Linux which chipset is being used)
* Fingerprint reader support (should be easy)
* SMBIOS trickery
* Investigation of other Chameleon versions
* Investigation of rEFInd/CloverEFI EFI-mode booting (I think this may solve at least a couple hardware incompatibility issues, or maybe cause a few others)
* Investigation of better "ClickPad" support