Assuming we take the previous 24 hours number of posts as the daily average for a board for Japanese (143) then we can see how many threads must be active given:
a) an altcoin child board and a main board -- supposing activity is split 3:2 main to altcoin and there are 5 posts per thread daily (which is low) that results in 17 threads for the main section and about 11 threads for the altcoin section.
b) just a main board -- anticipating that there will still be the same amount of altcoin activity, you'll have clashing threads which would result in about the same split as above. Perhaps even less threads.
I'm not entirely convinced.
Keep in mind these are just arbitrary estimated numbers and ratios.
Okay, actmyname. Thanks for the analysis.
I will wait for a reply from a moderator or administrator for the time being.