I just wanted to bring to your attention the ability to use your TFT touchscreen for Arduino (#1651) with the Intel Galileo as a Linux framebuffer. I did a bunch of work to make this possible at: https://communities.intel.com/message/224873#224873. The big difficulty with this is the Galileo’s limited CPU IO. I had to do a bunch of wire soldering and driver changes to re-route the DC and CS pins. Adding the kinds of pads you have for the other Arduinos, except to re-route the pins for Galileo would really help.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.