What oddball calibers are you referring to? The only ones that seemed a little "off" were the .22 Mag and the .454. Everything else on the list seems pretty mundane, if you ask me.
I wouldn't go for a 6" .357 (BTDT). 4" is more easily handled and carried, and recoil is still manageable, IMHO. The Ruger GP100 would be my choice in that regard.
I would prefer .308 to .30'06, just because the latter is getting harder to find but you can always get a crate of 7.62 NATO.
The "oddballs" that jumped out at me were just the ones you named, .22 Mag and the Casull.