I know there is a lot of mixed feeling about using presets, so if this is of no interest to you then fine.
I am thinking of selling a bank of 128 drum sounds for the A4, this will take me some considerable time, so in order for it to be worth my time it would probably need to sell well and at a reasonable price (£4-6?)
It would most likely take the form of a sysex of the individual sounds along with a text description of each sound, some example patterns and kits. The sounds would be categorised into kick, snare, clap, hi hat, etc. I'd try to cover a fairly wide range of sounds probably grouped into sets of 10, so 10 kicks, 10 snares, then one group of 8 (12x10 +8)
So:
Any interest? If so is the pricing suggested such that you would buy it?
Finally here is a basic video of the kind of sounds (although of course there would be a lot more and different types)
http://www.youtube.com/watch?v=TpyxrdVv4AA