and bring a thick wallet (like, don't bother unless you've got 4 to 5 figures). And a lot of patience because the real tools have a dwarf fortress shaped learning curve.
A fine idea would be an open source-ish replacement for these type of tools. Good luck avoiding the patent minefield.
Its interesting that there are lots of really good and popular and "famous" computer algebra manipulation programs competing with mathematica type proprietary software, but not much free good, popular and "famous" finite element analysis and electromagnetic modeling type stuff.
http://www.popsci.com/gadgets/article/2009-10/rfid-waves-viz...