i think that the future on bb axes is the new desing of the XTR.large diametre with a big hole inside the axe.Large diametre make it stiff,the hole make it lighter.
it now the time for the other industries to follow.
my personal opinion is that Europeans like more classical ideas and don't change something that is working well for such years.I like these ideas too.But Japanese like the money and marketing of the US & Australia want every 2 or 3 years new ideas just to sell,sell,sell.
look hybrids,fitness bikes etc.Good for a ride or tourism.
Europe dies on a real racing classical steel bike full Campagnolo.(hear the sound of rear cogs when stop pedaling.you bet my friends give me everything to be on the head just to hear my veloce....)