>> I can't recall any free MS trials for developer tools, though.

ask your VS.NET trial here:
http://www.microsoft.com/brasil/msdn/default.asp


>- Is there a need? Since the current product is not copy-protected, some people will take advantage and simply pirate the full version. Or perhaps a kinder way to put it, they could "borrow" the product for an "evaluation" period.

I think for the eyes of MS, this isn´t legal. And, people need to go to MS site and see a "Get your VFP trial here!".