They're at it again, so I will say it again:
1) All I've heard suggests that the provinces will be asked elect a Senate candidate who the PM promises to then appoint. In other words, the actual appointment will still be in the hands of the PM, who the provinces (and candidates) are being asked to trust. But I personally would not trust PM Harper to appoint a Senator whose views do not coincide with his own. As a practical matter, I think any potential Senate candidate with LPoC or NDP leanings would be disinclined to spend any money on a campaign where their appointment is not assured even should they win. But if the end result is to stuff the Senate with Torys, why not just stuff the Senate with Torys? Why the elaborate charade?
2) Any attempt to introduce term-limits for Senators will have to overcome opposition from the five Tory Senators who have come out against the idea, and any others who have not yet spoken up. Its hardly just the Libs in the upper-chamber who have opposed the idea.