I think the problem is that there is no quick route to victory for a new team which is acting as an inhibition to the formation of good teams, so my idea of Div B getting involved in KO is that it's an achievable place within a tournament (or 2, for someone who say, entered in Div C or D). Whilst realistically if you're coming 4th in Div A out of a group of 6, you shouldn't really be considered a contender; you've already had your chance.
But specifically with WHEE this isn't really ideal because like I say I think they'll just dominate B.