This isn't really happening.
No, seriously. It's not.
The talks of merger are just a "shot across the bow" of the Harper party... who are terrified of such a prospect.
Fact is, if the public is exposed to enough positive talk about a merger... then we end up with "just" a coalition, or better yet, a "cooperation agreement", they will be much more accepting. This is precisely what is currently going on.
Go back to worrying about Harper's destruction of the Canadian economy people... The LPC is still the LPC. We may "work with" others, but "we're" still "we".