the benefit of this is that you could use all of the pre-existing tool chains for game boy dev, and keep all the crunchy constraints of an 8bit system, while having a display that doesn't make information design so difficult. also if you kept the clock speed somewhere in a reasonable range (12MHz?) you could even imagine an actual game boy processor at the center of a (non-emulated) system, if you had an external mcu/fpga that handled the new graphics convention