What would be best for 500/1000 is probably side expansion but why surf in 640x400x16 colours?
What I want to see is 2 things for the A1200
1. An adaptor so I can rip out that terrible A1200 keyboard and replace it with an A500 superior unit (OK 2/3 superior, one A500 keyboard OEM is as horrible as all 1200 keyboards too)
2. Some sort of FPGA based system which focusses on Mhz not trying to replicate 060 chipset. A 1ghz 020 based instruction set type FPGA would be great and worth the money, and it would need an onboard graphics chip just like CyberVision used to do etc.
But to be totally honest I can live with needing Windows (or Linux if you really hate MS that much) to play 1080p DTS media files or surfing the net....things that are not cost effective on Amigas.
I am happy enough using some modern tech stuck on the back of Digi-View to make my dynamic Ham lace graphics or doing my graphics for games I am working on with DPaint 3 and 5 (skipped 4, OCS DP4 running on AGA is OK but DP4 AGA is dog slow and kills creativity IMO)
