I've increased the # of posts per page (the number of posts before splitting off another page) from 15 to 20. I hope this doesn't cause too much suffering.

Isn't there someway you could include an option within the individual settings, so you can display 10/15/20 posts by one of those dropdown selections, or radio buttons??

if so that might be a good idea, that way if anyone finds problems with a setting, they could just change it to a lower number of posts.

(if of course you feel up to the challange of re-coding :D)

Actually, there is such an option:

Control Panel > Edit Options > Default Posts per Thread

I suppose I should have mentioned it.