It's an interesting idea. I'm not sure how effective it is given the timing between elections. Perhaps it would be useful, but I don't know if you're going to see the tangible effects of any system until several election cycles anyway. If proportional representation does lead to more parties being represented in the House, and more minorities, that may take a period of time. If the current parties remain fairly strong in the current areas where they're strong right now, it may take a few election cycles before you see the true effect of proportional representation with all the parties that might be represented in the House at some point. At what point do you know that you're getting a true reflection of that system?
On October 4th, 2016. See this statement in context.