I have posted this before on MON but aside from playing unattractive football - you also have to consider O'Neil's transfer strategy. Since arriving at Villa he has only bought players from British clubs, with three exceptions: John Carew, reserve goalkeeper Brad Guzan and Moustapha Salifou (who is 26 and has yet to start a league game).
It has been a pattern throughout his career. At Celtic, in five seasons he brought in three players from abroad: Bobo Balde and Joos Valgaeren who were pretty good and Michael Herbert, who never played a single league game for the club.
Now, you obviously don't need to buy players from abroad to be a good manager. But the fact that he has bought just six in nearly nine seasons is a bit of a head-scratcher.
How would he deal with the number of foreign players we have at the club??
Unless he's somehow prejudiced against them (and I don't think he is), it suggests his scouting network and decision-making maybe isn't what it should be. Instead, he's bought British players, mostly young ones, for which he's been widely praised. But again, it's not as if he's unearthed gems, signing some teenage left back from Colchester who then goes on to become the next Stuart Pearce or an underrated striker from Reading whose career he helps get back on track. Most of his British signings are fairly obvious ones - well-known players at market prices, whether it's Stewart Downing or Ashley Young or James Milner. There's no great nous or imagination there, it's basically a case of bringing in brand names. And paying accordingly for the privilege.
He's supposed to be some kind of guru to young players, but, in fact, he's given league debuts to just four home-grown players in four seasons. One of them, Isaiah Osbourne, is now on loan at Middlesbrough. The other three - Ciaran Clark, Marc Albrighton and Nathan Delfouneso - have between them started a single league game this season and played less than 300 minutes between them. He's meant to be methodical and clear-thinking, but then he signed three quarters of his starting back four (Stephen Warnock, Richard Dunne and James Collins) in the last hours of the transfer window. Which actually doesn't suggest much of a plan at all.
What you're left with is his results. Which, as stated above, are good but not exceptional. Three SPL titltes, three Scottish FA Cups and a League Cup in five years. But, of course, that was at Celtic. Gordon Strachan, his successor, also won three league titles, as well as a Scottish FA Cup and two League Cups, and he did it in four years. You don't see Strachan mentioned in the same breath as Sir Alex Ferguson and Brian Clough do you? And, yes, he did take Celtic to the Uefa Cup final. (But then Steve McClaren also took Middlesbrough to a Uefa Cup final).