The Flemings are a bit like Ulster unionists, slightly embarrassing in company with their ultra-patriotism and a bit gauche, and consequently the more sophisticated Dutch are not wholly enthusiastic over the prospect of absorbing them into a greater Netherlands. The Walloons are, well, poor. The French, already pouring millions of our taxes into the Nord Pas de Calais region, are also not keen on absorbing Wallonia with its high unemployment and low potential. France and Holland are really quite happy with Belgium the way it is. There is also a tiny German minority, a few tens of thousands, and Germany alone seems eager to expand its borders by half a mile to absorb them, but then I expect it's genetic.
Belgium is no closer now than it was in 2007 when this blog started to having a stable government. The more the recession bites, the greater the pressure for a split, and Europe will have a spare king and lots of spare princesses with no country to call their own. I suppose there's a vast hotel in the South of France somewhere where they all live, those ex-kings of Greece, Yugoslavia, Macedonia, Bulgaria, Romania and their retinues. I'm sure they'll find room for Albert.