thanks for the anwers,
you mention that the UM are responsible for 60 % of the gene seed that does not mean that 60 % of the marines comes from the same recruitement pool as the original recruitement pool of the ultramarines,
how do you account for the space wolves numbers there were 100 K recruiting from Fenris (that is a question, not something I think I read)?
as for the splitting, there is no reason to split the chapters that would not help, the intention would be to allow them to grow and in say 1000 years the chapter size should be at 2000.
the crimson fists for example, they are rapidly increasing their number,
and again 2M might just tip the balance,
but I do not want to make this into a yes-no discussion, I accept your arguments and acknowledge that there will never be an intention towards 2 K marines/chapter,