1) The threads won't update in real time, as the rss doesn't.
2) Those options are not available in RSS feeds. You'll probably have to have someone custom code a script to do this.
3) Same place you turned your external feeds on in the admincp, there should be a character limit setting.
4) It's premission based, so mod / admin post won't show to those that don't have mod / admin permission. In fact, TBO, I'm a admin, and never see admin post using the rss feeds...

Sorry for sounding harsh, but it seems that the extremely basic RSS support that vBulletin has had since it was implemented is a topic that gets avoided by everyone. I've been searching the forums for an answer to this:

- Why does the RSS feed not display every single new post, just like phpBB (often ridiculed by vBulletin hardcores) has done for ages?

I want to see every post in every thread in my feed reader, not just the first post of a new thread. Limiting it or not allowing to configure this behavior seems like a very poor show IMHO.

During my searches here, I've found a number of threads on this very particular topic, and they are all unanswered, or answered with a simple "it doesn't support that".

Regards,

Mike