Tim, as long as you have the ear of the folks at NEF H&R/Remington, can you make the suggestion they set up a sort of custom shop. It really wouldn't be any different from what they have now with the accessory barrel program, but instead of just barrels on hand, they would also have SB2 receivers. I understand it is hard to make a run of a rifle like the 17 Rem Fireball, but if they had something like this, I could call up, get a barrel (one that is not on a production rifle), and have it shipped to my FFL for transfer and pick-up. That would allow those of us that would like to order an accessory barrel as a complete rifle to just do it.
If they wanted to extend it, I would also like to see the ability to order sets. Say I want something like the Rossi Trifecta or the NEF matched set, but I really want 30-06, 17HMR, and .410 (or some other oddball combo), I could call up, order the base 30-06, have them add the accessory barrels, and ship to my FFL for transfer.
It would seem they have most of this type of a setup in place with the barrel accessory program, all the tracking, shipping, ordering, etc is there. Only thing really missing is the ability to get the receivers and complete rifles. This could also keep their distributors happy, don't offer the first option on any barrel that is offered from a distributor, and if it is a big issue, only offer the second through a distributor, but make it easy.
Anyway, that is my harebrained idea for the day.
--Carl