Interesting that this topic comes up right now. Sunday I was at a local watering hole watching the game and got into a conversation with the guy seated next to me. Turned out that he was a longtime football official, and he worked as one of the replacement refs during the strike. He actually worked a couple of Pats games and did three of the prime CBS games ('without incident' he said, in a tone that indicated he was equal parts proud and relieved).
I asked him about his thoughts of the NFL hiring full time refs, and here are his thoughts on the subject.
First off, most of the current refs have lucrative full time jobs during the week. To make them full-time employees would mean that they would have to decide which job they wanted to keep. He said that in many, if not most cases the current refs would probably take their current full-time job over being an NFL ref. If that were to occur, what happens in the immediate future? You have a drain of your best, most experienced officials, and they are replaced by a group that is not as experienced and not as good. That means that in the immediate future, for the next few years the performance gets worse, not better.
Secondly, what exactly is gained by making these officials "full time"? The best way to improve is under actual game conditions, i.e., officiating real games. How are you going to do that when there are no other games to officiate, other than perhaps having them work CFL games before the NFL season kicks off?
The problem is that the NFL season is only 16 games go long, so there is only so much experience that can be gained. It's not like baseball or hockey where you work your way up through hundreds of games in the minor leagues, or even basketball where you call 80-100 games a year to gain that experience. Studying film, working out, simulated games and computer based tutorials are only going to help so much. By far the best way to improve is by working in actual game conditions, and there just isn't any of that available.
His reasons make sense to me; I'm not convinced that the NFL going to full-time officials is going to improve anything.