So why did they keep banging on about making new signings and moaning that we didn't know the colour of Moshiri's chequebook ? That's been the number one topic among Everton fans I've spoken to this season, the desire to see new faces. And you're right, Koeman has turned things around largely by working with the players he inherited :
** Improved fitness levels (which paid off handsomely in the 2nd half the last couple of games)
** Barkley now playing to his potential, after Koeman does intensive work on his development and drops him for a couple of games.
** Switched tactically to three at the back
** Given young players a run in the team (Holgate at the expense of Jagielka, Davies at the expense of Cleverley and McCarthy, Lookman now getting used ahead of Valencia)
It's not just down to the players, Koeman has played a key role, let's give him some credit for this, and also recognise that this is a work in progress, it takes time to change things around, and he'll need more time to finish the job.