I get the point of it Simon and don't have a problem with it. It's obvious why you've designed it and it get's over a number of issues.
The only issue is that there is no information provided as to what is actually going on. I've not seen any information on what the limits and rules actually are. Normally I have zero problem posting either replies or new topics. Right now I can post replies fine yet I've just tried to post a new topic (different one to before) and I've got the spinning icon on queuing with no information on how long it might be before it posts or why it is queuing (e.g. "You have posted x new topics in the past hour, your new topic will appear in approx 1 hour")
In the past 24 hours I've posted 10 replies. The only new topic I've tried to post is the one on the brother stepping down. I tried posting that first at 4am yesterday and it appeared 9 hours ago according to my topic posting report (I guess around 8pm). I've just tried posting a new topic and it's queuing. Do I have to wait 14+ hours?