>>11918998
>Compared to the NES the graphics weren't so great
The graphics were perfectly fine. Some games even have NES style scrolling. Hardware capability wise, it's actually better than the NES because it could do software sprite scaling and render 100 sprites on screen. Robotron 2084 renders 40+ enemies on screen without slowing down or flickering at all. Ballblazer and F18 Hornet boasted impressive sprite scaling.
The problem with 7800's graphics is it's not as easy to work with as the NES. It uses line buffers instead of sprite display list. More similar to an arcade machine than the usual home console.
>>11919038
It was designed and produced before Jack Tramiel's time. Jack Ross commissioned the machine. Tramiel was a computer nutter and would have wanted the hardware to be more cutting edge while staying low cost. Just look at Atari Lynx. Color LCD, hardware sprite scaling, and PCM sound chip on a handheld cheaper than SNES and Genesis.