The main issue I have with thread loading is the scripting that moves you to the latest post. I think that's the thing that is bothering people, because what seems to happen is that you're moved to the correct spot on the page immediately, but then when images are being rendered above your location, it leaves you in no-mans-land for a while, until the entire page has loaded. I don't have a good suggestion to work around this behavior, but I'll mention that if people got their wish for 100 posts per page, this would become nearly impossible to negotiate.