I have mixed feelings, as we can see what he's building. The team's patterns are improving and his squad replenishment has been better than any since Fergie. We're right to do it by 2-3 players a year, rather than in bulk like Chelsea have, but it was always going to be a slow process because we were so far off.
That said, his game management skills are awful though and once the opposition figure us out he's slow to react.
But on the flip side, we have made so many basic individual errors costing us goals (which is something we've suffered with from before Ole) that he can't account for and must be pulling his hair out. Based on previous we're likely to see the losers identified and moved on (if the club can find buyers - another area that he's been let down by) when he's gotten better options.
It depends if the club go out and get the standard of player required, until that point the weak links have to play because we don't have anyone better.