Unfortunately just opening a subsidiary in another country doesn't help, one of the 'features' of ITAR is that it is extraterritorial, so even if you open a subsidiary in another country all the ITAR provisions apply in that country, as well as all the export controls of that country. It's tons of fun even working for a Canadian company.
I know that I might not be guy who flies to Mars in the first batch but I definitely want to add mine 2¢.
(mostly around intuitive user interfaces)
An alternative is to open subsidiary in the UK / EU...