I'd buy an FGPA accelerator but it would have to be faster and have more memory than my Blizzy 1260 
An IdeFix Express Mrk2 with SATA might be tempting if Jens every finishes it!
Not really interested in much else, and I don't think USB is really that useful on an A1200.
Sound cards are cool but again, not quite so useful on an A1200 (due to clock-port bandwidth and lack of space).
If I had an A3000 then I'd be interested in CPU/HD/GFX/SFX/USB upgrades
What the A1200 needs is an FPGA accelerator that includes USB and onboard AHI compatible sound, as well as SATA.
The A1200 case is a tight squeeze for sure, and the clockport does have a tendency to suck. Why not offload a lot of that overhead onto one modern board? Again, just wishing here.
* Edit - Also RTG!
