I've always thought Pollock, Procter, Barlow, Goddard, Trimborn, Lance, Chevalier must have been pretty darn good, personally.
Bedser, Statham, Trueman, Tyson, Lock, Laker couldn't have been shabby, either (never played together - Tyson directly replaced Bedser and it aroused considerable consternation).
Not sure if Holding, Garner, Marshall and Roberts all played together (had this discussion with Dave Lewis a while back), certainly if they did Roberts would've been past his peak and Marshall wouldn't yet have reached it. Not like it'd have been shoddy, though.
I'm always amazed, though, when I think of Lindwall, Johnstone, Miller, Toshack, Davidson and Benaud - who if they didn't ever play together must have come darn close.
Come to that, Lillee, Thomson, Walker, Gilmour can't have been shoddy, either - though Thommo is rather overrated and was only at his searing best for a year or two and otherwise was a bit above average. O'Keefe slotted in of times, too, but we're talking about making an attack stronger, here.
To be fair to him, though, there were certainly worse bowlers who played for Aus in the decade after him.