What I'd be worried about:
It's far too easy to get between Everton's centre-halves. Even allowing for the cleverness of Wilshere's pass for Bournemouth's first goal, it was just too easy for Josh King to find space between Williams and Funes Mori. The entire midfield standing off Bournemouth didn't help but this is not the first time I've seen teams get at Everton like this. It's a problem whose origin finds itself beginning with Lukaku and working its way back through the players in midfield.
Lukaku scored four. What can you say? Well, you could say this: defensively he's a bit lazy. He makes half-arsed attempts to close down centre-halves or the deepest sitting midfielder. Maybe this can be forgiven because he spends so much time up there alone but it has the effect of letting the opposition knock the ball around a bit too easily. When the midfield then sits back, this is compounded. This is what happened yesterday and all of a sudden Bournmeouth outnumbered Schneiderlin and Barry. Once they outnumbered them, they started getting in between the full-backs and the centre-halves, as the Coleman and Baines were forced to step out to try and close down the Bournemouth's onrushing midfielders.
Spaces appeared everywhere because the front four were strolling through the game, switched-off at 3-0.
That's not tactics, it's a mentality issue. It's concentration and desire. And it looked, for fifteen minutes, like the worst excesses and naivety of the Martinez era were still with us.
That Everton won 6-3 in the end just demonstrates the fine lines between success and failure in football.
Things to feel good about:
In the end, the team imposed itself on Bournemouth and killed them off.
Lukaku is about the best striker a team in Everton's position could hope to have. Barkley's final ball and decision-making is improving all the time. Coleman is at his peak.
Tom Davies looks, right now, like he should be starting every game. Schneiderlin has settled well. McCarthy looks like he has some confidence back. Lookman has a few touches and may grow into a player.
Gueye still has to come back into the frame. Holgate might have something about him too. Baines is performing steadily, without really being what he once was.
This Everton team have a little bit more steel about them right now than they did over the last few years.
So: 6-3. Exciting game, unnecessarily close. Got away with it. There are still signs of the Martinez complacency at times but, equally, there are signs of improvement.