I would say that, in order for someone to integrate into one of Canada's official language minority communities, a considerable amount of effort is needed when it comes to the history component.
In response to your first question, I would say that, because of our democratic system, some communities are more interested than others in the French fact. But it's a very small number. It isn't municipalities' first concern.
What's more, Canada's immigration situation is still evolving. According to projections for the next few years, the number of immigrants needed to replenish the workforce and offset the effects of the aging population is only going to increase.
As for your question on history, I don't think the only thing we need to do is teach immigrants about our history. We would also benefit from learning about their history in order to better understand them. The integration and culture of these newcomers needs to be addressed, be it from a work or daily life standpoint. We, as communities, should be aware of those needs. Furthermore, it's a way for us to get to know each other better and it improves how we interact.
It's a bit like marriage. Two people meet and think they know each other really well, but after a few years, they realize they don't know each other quite as well as they had thought. The process hinges on mutual respect.
As for the importance of francophones' history, I hail from southern Saskatchewan. Only a few years before I was born, the Ku Klux Klan had a very strong hold in our area. I think it's important for francophones to know those kinds of things and for newcomers to know about our history.
That said, I think it's important for us to know one another's history so that we can live together as a people who share a language and the French fact, thus contributing to the country's development.