I don't think Macey has been as bad as some are making out - certainly his shot stopping is very good and he actually deals with crosses pretty well - the issue is moreso with high balls into the box from deeper areas which he seems unsure about. And of course he kicking is iffy - weirdly, it seems better on his left foot if anything!
His performances have been slipping in the past month or so, and I would have liked to have seen an upgrade in January.
McCormick is too old, it was showing last season.
Letheren hadn't exactly covered himself in glory in the reserves this season.
Cooper may be good enough, but I'd worry about putting a young keeper behind our shaky defence, it could wreck his confidence. His time will come I'm sure, but you feel that he may not be ready yet, certainly not for a relegation scrap.
The unfortunate circumstances with the Burgoyne situation will have of course seen our budget take a hit, and now if we want to find a new keeper in January it will be taking another hit.
I'd be tempted to put Letheren back in and see if he can rediscover his form of last season, where (contrary to some people's memories) he was absolutely fine. The added experience in our back 5 would probably be beneficial too.