The one main problem with Banks' setting is lack of a Mind (or an equivalent) that is completely megalomaniacal and batshit, with an overpowering desire to dominate and destroy. A real Homogenising Swarm that demolishes galaxies, not self-replicating robot bugs.
'Poverty is not an injustice. There is no such thing as causes for poverty, only causes for wealth. Poverty is not a wrong, but taking money from those who have it to equalize incomes is basically theft, which is wrong.' - Typical Randroid