new os3.x software ?

[ElPolloDiabl]

If you sell games/tools for 99 cents you could probably make a thousand bucks.
Just keep the price low... I buy simple apps or games for $5, sometimes more. If the price is more than $15 I will just hunt for a pirated version so the writer gets nothing.

[ElPolloDiabl]

Games sound like the place to start. Because there are likely to be more gamers.
Assuming you get permission I'd donate to such a bounty. Rummage through the old DOS and Win 95 games and pick out your top 3.

My first suggestions are:
SSI Panzer General 2
SimCity 3000. My favourite version.
Ghengis Khan 2

There all should play on A1200 with RAM expanision.

[ElPolloDiabl]

Something like Simcity 3000 would make good use of the 060s extra horsepower, but it might also be playable on just a 4MB Ram expansion.
Sorry the only thing I can think of that wouldn't need 3D is NFS 1&2. Everything else I've played to death and don't want to see it again in any form.