Why do you lose a say over global standards? Surely you now represent yourselves directly on global standards bodies, instead of indirectly via the EU's common position?
But there's no representation on the EU standards bodies at all, and realistically there are two kinds of standard manufacturers tend to care about: US (mostly UL) and CE.
Losing the ability to affect these European standards is a price to pay, Brexit being one big trade-off after all. But I'm still unclear on what the advantages are that make it worth it.