The A1200 is darn near perfect, it's the classic commdore computer.
Low cost but just enough features and modern amenities to make it cool.
rediscovering it in the past few years along with the new CF card reader functionality and CF/SD card to laptop adapters has made it fun.
Things I'd love to have seen in this class machine
A) Faster cpu as standard
B) Simm slot on the MB
C) Dsp
G) Chunk GFX mode with rom support for booting into VGA style display (not a clip on the AGA chip flicker fixer)
With the mediator series you have access to gfx cards.
With current tech it would be cool to see a Turbocard with say an 030-060 DSP slot, and GFX card embedded onto the turbocard. FPGA on the card would be cool too.