I've laughed and made fun of too many Leafs fans for getting super excited too early, only to watch their team epically collapse and miss the playoffs. That's why, right now, I'd consider myself cautiously optimistic with a hard emphasis on cautiously.
This team has some dud games left in them as evidenced by the LA game. But the way they're playing right now is 100x better than anything I saw last year and maybe even the year before, just in terms of making plays and working together. I no longer have to turn the TV off if we let in a goal after the first period because it's pointless to watch the rest. These are encouraging signs, whether we keep playing well or fall short.