Well, there has been that tinge of populism about them ever since it became mostly ex-Reform. I do think they're trying--though having a hard go of it--to move away from some of their more unliberal tendencies. The old Reformists in the party ranks habe nowhere else to go so they're hard to be rid of and as long as they're there then their ideas on policy will leach out.
The Reform was really about honesty and ethics.
They were created during the Mulroney era when a number of promises were broken and serious allegations about the PM. When the Liberals got in, all traditional parties, including both the PC's and the Bloc rallied around the Liberals to prevent this wave of honesty in government from taking hold. They did a good job, as Chretien was able to have a number of ethical scandals that didn't get much notice (at the time) because nobody, press or oposition, wanted the Reform to gain strength.
This is why when Harper got in he was so strong on ethics. Ministers were removed for $16 OJ (Oda), or excessive travel (MacKay), or carelessness of clarified documents (Bernier).
Now that the Liberals are back, these offenses appear tiny compared to the PM violating 4 Ethic Act laws, the finance minister being charged by the Ethics commissioner, Defense Minister who is using government jet at a rate 50% higher than MacKay, and expense scandals (Butts, Philpot) that make Oda look like a rounding error.
When it comes to the question of a Trump like politician in Canada - we have him in Justin Trudeau. Not very bright, not experience leading in government, and tries to do thing completely different than the last several leaders (there was much continuity from Chretien to Martin to Harper on economy, defense, etc. but Trudeau is 180 degrees different). Both also relied almost entirely on their social media status to get elected and both said stupid things during campaign. Both now appear mired in scandal - largely due to their arrogance and also lack of experience.