RE: Which calibers/guns would you like to see brought back or made?
While the .30-06 is still my hands down favorite, I like the oddball European calibers; I am glad that Ruger and Winchester offer the 6.5x55, and I just picked up a Remington 700 Classic in 8x57 mm Mauser (hope to head to the range for the first time with it in an hour or so.)
I wish that there were more bullets and loading data for the 8mm Mauser. Factory loads are anemic, understandably. The 8x57 can do nearly anything the .30-06 could do, given a decent bullet selection.
I wish that the Ruger M77 RSI came in more calibers, especially 7x57, 7mm-08, and .260.
I'd love to see more rifles chambered in .280 Remington too. This looks like an awesome caliber.