It certainly could present other challenges. I think that sometimes it's just easy to pick a party to vote for, and it doesn't really matter what the MP is saying. You're not going to worry about your candidate because they're saying whatever is being said in Ottawa by the party leader as they go around.
Perhaps that sort of system would lend more weight to what a particular candidate has to say or what they're thinking. If we were in a system with more power for MPs, it would be a bigger factor, frankly, in terms of what your MP candidate would be saying and what happens in Ottawa.