My riding and all the ones around me are an NDP fortress and it would be a shame to lose that to the Liberals because they've been "merged". In my opinion, the problem is not vote-splitting, which is a healthy way of actually, you know, "representing" our diverse views, the problem is that so many of the ridings have been resized to include just enough of the wealthy, suburban and rural conservative vote to make it require almost perfect strategic voting to defeat them.
That said, I would absolutely welcome, celebrate, and advocate for proportional representation or at least instant runoff. FPTP is thoroughly obsolete and has no place in a modern stable democracy.