I thought I would give my point of view to this thread.
First of all, I think it is a good idea that someone wouldn't mind taking the time and effort needed to create new hardware for the Amiga, and one of them being for the A600 is great, since the upgrade possibilities aren't that great for this particular machine.
Anyway, my thoughts about what is needed... Basicly, most people just need to be able to play their games from harddrive, and maybe surf the net, and upgrade to maybe OS3.9 to get a more modern OS.
If you look at the OS3.9 requirements, the minimum specs are 6 MB ram (2 MB chip and 4 MB fast IIRC) and a 020 CPU. Since you are planning on adding ram to the accelerator, then these needs are covered.
For playing games, in most cases 4 MB fast ram is enough, as fast ram is the only thing preventing people to play games on a stock A600 with harddrive.
Surfing the net with an Amiga without graphics card is IMHO not pleasant, and the browsers needs updating. For FTP and IRC no graphics card are needed, so an accelerator with ram would be enough.
Since the accelerator needs to be useable in an A500 as well, the suggested IDE header is a good idea.
Basicly, what I think most people need for either an A500 and A600 is a fast ram upgrade and a small acceleration. A500 users needs a cheap way to attach IDE drives, so a complete unit for me would be 020 accelerator, 8 MB fast ram and an IDE header.
No need to have an FPU, 128 or 256 MB ram, USB and build-in ethernet; as I see it it is only to be able to brag, and I hardly believe that more than 5% of possible users needs more than mentioned above (020, 8 MB fast and IDE).
Anyway, that is my thoughts, do with them what you like :-)
