I don't think Gillis deserves as much grief as he's getting.
If the rumours are correct, Torts and the goalie situation were meddled by ownership.
From Jeff Patterson @patersonjeff 36m
Gillis 'good': Ehrhoff, Hamhuis, Tanev, (healthy) Malhotra, 2011 Higgins, Stanton, recent Kassian, (possibly) recent drafts [and Samuelsson]
I'd agree with all of that - can't blame him for Ehrhoff leaving and Hamhuis sagged this season when the rest of the team did - but prior to that he was an Olympian. Manny Malhotra when healthy was a steal. Higgins was a free pick up, Tanev/Stanton were solid pick ups. Kassian is slowly becoming what is/was expected - maybe it'll happen - maybe it won't but it's not like CoHo is a saviour in Buffalo.
Gillis 'bad': goaltending, loyalty to aging/fading core, NTC, Sturm, Roy, Pahlsson, Booth, Ballard, public persona
The goaltending debacle is a big problem - but I've heard that twice MG went to management and they shot down transactions that would've solved the situation without Eddie Lack being the default #1. If that's true - it's not on him. The contract to Luongo was a VERY good contract until the NHL decided that too many teams were abusing it and changed the rules after the fact.
The number of NTCs handed out were unfortunate, but it was understandable. None of the NTC clauses scream out OMG what we you thinking. Maybe the Burrows one if any.
Sturm - can't say that's bad - signed him, didn't work out and moved him. Booth - yah, that's bad but at the time I think EVERYONE in Vancouver (and around the league) thought it was a big win for the Canucks. Ballard - AV killed his confidence, but sure MG is to blame for that.
Derek Roy / Sami Pahlsson - both trade deadline attempts to get a longer run into the playoffs. Kevin Connauton and a 2nd round pick for Roy - that just didn't work out, but it was worth a try. Pahlsson for Taylor Ellington (prev in the ECHL, now out of hockey) and 2 4ths. It was a shot in the dark that Pahlsson would help, he didn't but Ellington and 2 4th isn't a huge cost.