If anybody wants to know just how valuable Sbisa is, all he/she has to do is read Vancouver's own board.
He's bad, no question. He is also prey to the group-hate narrative that tends to form around certain players on message boards like these.
His main problem is his contract and how he is employed. He
is an NHL defenseman, just a bottom pairing one who still (some think) retains some kind of potential to get better. He's not the worst defenseman in the league, nor arguably on the Canucks (last year Bartkowski and Weber both out-sucked him, this year Tryamkin is a very unknown quantity, and Pedan is probably worse than Sbisa. Biega has fewer physical tools, but doesn't tend to make as many mistakes).
Canucks would love to see him moved to clear up cap space, and also dread an injury that increases his ice time and responsibility. He is (generally) fine in limited minutes.
And remember, he is on Team World! He narrowly beat out Weber for that last D spot, which is very exciting for all involved.