Okay, then, in the spirit of assistance, some ideas:
People will retain their ethnic heritage no matter what. We may as well take advantage of it. I attended Scottish games as a child, and most of the participants had been here for generations. Haggis and other horrible foods were consumed in the spirit of multiculturalism -- even though that was not yet a term in official use. Likewise with Octoberfest -- how many members of the oom-pa-pa bands that have been playing for decades are actually from Germany/Austria themselves?
We are all immigrants unless we are of First Nations heritage. Christian religion, parliamentary democracy, laws based on those of Great Britain (and partially from France in Quebec) etc. etc. are all a result of immigrants retaining their ethnic heritage.
We have become a global world, with the need to interact with cultures everywhere. Canadians who understand China, India, etc. are a huge benefit to taking part in global trade and interaction.
We all benefit from exposure to other cultures. It makes us less racist and insular as a society when we actually meet others and realize they are not so different from ourselves in the most basic ways.
Coming from a meat-and-potatoes culture, my life has certainly been enriched by the ability to enjoy Thai, Chinese, Lebanese, Greek, Italian etc. etc. cuisine. Coming from a family that only listened to Tennessee Ernie Ford and Julie Andrews records, the ability to learn about and appreciate music and dance from everywhere else in the world is a blessing. I hope that their descendants retain those aspects of their culture. Canada has benefitted from film-makers like Deepa Mehta that tell the stories of other cultural experiences, in films that we can all enjoy.