I have read in other posts, and mostly from other large countries like Italy, that if you get demoted from I good luck coming back up.
Not sure what that's based off of, but already there's been three teams demote from the NBBA and come back up within 2 seasons or less. I know of two teams that demoted into the same conference in division II and prob the biggest reason they didnt come right back was due to the difficult of that particular conference (big 8 in II.4, loaded from top to bottom). Many of the early season demotees quit before they tried to promote back up. The rest that went down are still competitive but havent been able to move back up which is a testament to the growing difficulty in II.
In short, I dont see this trend in the US.
"Well, no ones gonna top that." - http://tinyurl.com/noigttt