Hi,
I did place a bid on your last project, never got a reply though. unlike last time i'll keep the proposal simple and easy to understand.
- Trackpad is fixable, most likely a Precision Trackpad.
- Brightness Keys, i guess you mean the keys on keyboard that change display brightness (not the keyboard backlight keys), these normally work fine, i have seen one dell machine that uses some custom approach for this, but i'll need ACPI (DSDT/SSDTs) files for better understanding
Please contact me in chat to discuss more.
Regards,
Hamza