There's an awful lot of talent on that team.
I think Keefe deserves more "credit" than he is given for their failures.
Season five, time for him to go.
There is, but its skewed and the balance has never looked right in his time in charge. When players like Klingberg - and there have been others - come to your team and underperform, is that on the coach, the player, or something else? If there's a pattern it might well be the coach, especially when that pattern centers around the defense. But it's hard to say for sure.
Keefe finally got the Leafs over the first hurdle last season in that they finally won a playoff round, and against Tampa no less, and that has probably bought him some time, even though it was only one round and the team quickly imploded again thereafter. That's rapidly fading into the past now though, and to say the least Toronto have to aspire to more, and soon. They're not my team so it's not really for me to say, but my sense is to not pull the trigger on him just yet. Give it another 2-3 weeks and see. But some tough decisions are definitely going to have to be made if things continue as they are.