Except that we won't be released in the main from EU regulations, because unless we want to cut ~40% of our trade at a stroke we'll still need to abide by them

Except that we won't be released in the main from EU regulations, because unless we want to cut ~40% of our trade at a stroke we'll still need to abide by them to sell into the EU. And for most companies designing and producing two products (one meeting EU regs, one for ROW) is more cumbersome and costly.