We should develop much closer commercial and other ties (eg regulatory) with the EU but Canada should not outright join. We don't need the Euro and we don't need the European Stability and Growth Pact. Lower as many barriers, but we have to keep control of our basic economic policy levers.
Edit: by the way, after looking it up, I'm finding that EU rules about "State Aid" would make the new NDP platform (Avi Lewis campaigned on public options and Crown corporations for various sectors, and buy-canadian rules to protect workers during the green transition) infeasible. So... no, I'm not interested in joining an economic bloc that makes democratic socialism functionally impossible.