I think you're overstating things here ...
Stormo had 3 career receptions going into this year, according to ESPN. And that's a Position Change -- totally different from being a true Ironman or Two-Way player.
You're right about WR / nickel though, and that does happen (usually when a team lacks depth, though). Troy Brown did that with the Patriots a few years ago. Again, though, it's a far cry from someone like
Bronko Nagurski.
Now
this I agree with. Position Changes (and just moving guys on the depth chart) are out of whack. AWR doesn't recover nearly as fast as it should in NCAA 11. That would certainly help with the Ironman issue.