Lets put this into context, yes Levein did a good job of :
1) Reducing the budget
2) Introducing younger players on longer contracts.
3) Bringing through academy players into the reserves and first team.
4) Leaving the incoming manager with a talented base to build from.
But he also failed badly in the following areas :
1) 22nd and in the relegation zone of the championship.
2) Six straight league defeats and 2 points from possible 30.
3) Only 5 league wins from 30 matches this season.
4) Only 2 away league victories in his tenure as manager.
A pretty mixed bag, undoubtedly Levein has left a talented and young squad, a decent platform to build on, however he has also left us in real danger of relegation to the 3rd tier for the first time in our history. I dont believe his time in charge was a complete disaster, as there are a number of positives that can be attributed to his time as manager, however it was plainly obvious that he was out of his depth in a matchday scenario and that he had greatly underestimated the championship, the time was right for him to move on, he had purchased many of the right parts but couldnt seem to be able to piece them together.
IMO he should leave neither loathed nor loved.