Yes.
O'Connor had some above average games for us and some fairly horrendous ones. What we saw in those good games was a player playing at his peak in my opinion. Given his lack of pace and his massive one-footed-ness - areas that are unlikely to significantly improve with age - there were few areas in which he could develop. His reading of the game was okay, but not to a standard of even Reynolds or McKenna. His main attribute was his strength and aggression and that should suit down south. I think we've seen what we can get from O'Connor and I don't think it's worth pushing the boat out to retain that. His inability to kick with his left foot means that he's not a great utility player for a squad either, as he can really only cover a single position. Things seem to have gone quiet on Naismith from County, but he'd be more aligned with what we should be looking for in a squad player.
There is a lot of shite in that league that really isn't suited to the Scottish game, which we've seen in the past. There are also a lot of players who have the attributes (skill) required to play in Scotland that struggle down South and vice versa. It's not necessarily a case of how many games you've played, it's about the way you play the game. It means that there are a lot of gems to be plucked from the lower tiers of England that can really fit in up here. The reverse of this is known as "Ifil's law", where a player can be fantastic in an English league and be the first name on sheet for a team down South only to come up here for us to find that they've never actually kicked a fitba before. It means that the scouting has to be a bit more than just "good on paper", and that's where we've fallen down under every manager this century. Hopefully this chap will be the start of something different.