Not to take a negative of dim look on this, but rechambering a barrel is one thing, reboring quite another. At the point one is talking about a rebore, we are into over $300.00 for a barrel. At that point, why not just invest in a TC frame, be it Contender or Encore and just buy what you want outright? Just as valad is to get a Savage 110 and simply have a barrel made for it. That is simply a phone call away as the barrel maker can thread the barrel and chamber it, all you do is set up head space whne you change the barrel out.
Of the cartridges you mention, there is nothing there that a 22-250, 25-06, 7-08, 280, 308 or 30-06 won't do except the 45 ACP or 9mm, NEF sells the 17 HMR. Admittedly a 45 ACP or 9mm even a 40 SW would be nice, but the market ain't such or NEF ain't seen the light that would make 'em want to enter it.
I'm headed toward a Savage/Stevens in 7-08 or 308 myself. I figure that way even if the barrel is lousy I have an action I can put what I want on. May not be loyal to NEF, but NEF sure ain't been loyal to me. Besides, it will be a snap to have a 45 ACP barrel made, and I'd much rather have a 45 ACP carbine than a 44 Mag. carbine anyday.