For me any of the below are a real indicator that he is capable of breaking the mould with us:
Trophy
Top 4 finish
Away win at so called big 6
Dominant Derby win at Goodison
Sadly, until any of the above start happening we can talk until we are blue in the face about him doing this, or saying that, but he won't be doing any better than Moyes did.
That's the cold hard truth that us as fans need to accept to push Koeman and Everton to the next level. I'm fed up clapping another Goodison sunshine stroll at the end of another nothing season. In fact watching us dismantle a good Leicester side had the edge taken off it knowing that we'd capitulated twice the week before and to the same Leicester side in the cup.
If none of the above happen, no matter what people protest, we won't improve. You can't make top 4 just beating up dross at Goodison in the second half of the season. If you can't win regularly on the road and compete with your rivals home and away you don't win anything no matter how good your home form is. Koeman has to tick one of the above boxes for me it's as simple as that. If he goes 3 seasons without ticking any of them then I can guarantee no matter how easily we put away the WBAs of this world, how many Lukaku is scoring, how many cheeky dinks Tom Davies is throwing in, we won't have moved forward.
He has to take the next step. Go to the Emirates at the last day and play like we did v Leicester. Go and lay down a marker to a team in disarray, show the players that they can win at these grounds and that he expects more of the same next season.
He has to obliterate plucky little Everton once and for all to be considered a success.
Small steps like.
The only disappointments for me really this season are the cups.
I'm numb to the derby games anyway.