I used to do it this way, and I believe I had a 2 second timer?
At least that makes half the time...
I'm using suchmoon's script. That is, everything is queued to (a personal buffer of) 4.5 seconds between reports. (to avoid the conflict, which still sometimes happens!)
I've already set my report text to fit the majority of the posts that are going to be spam (i.e. Generic, vague, padded, irrelevant) since you're not going to find many of the other options in the forum cesspools that are the * discussion$ threads.
Hmmmm, that's too bad then. It doesn't work on hardcore reporters, but at least it works for medium/low reporters. I personally don't browse Shitcoin/discussion$ threads myself, because I believe most of them shouldn't exist in first place
That's what I've been doing for a long time when I found a "batch" of bad posts, but I always have to slow down because of the 4 seconds delay.
I'd say, once a user reaches the minimum of 4 seconds delay, it should be removed entirely. On average, the forum doesn't allow more than one page view per second, so (apart from some burst space) that would be the new limit.
I believe there are some restrictions that come with the forum, and I'm not sure whether they can be modified. For example, another forum I participate on, has a Direct Message (it's more like a chat rather than our PM system) limit; even for global mods/mods/any staff. The administrator has been told about this, but his answer was that this can not be modified, as per the forum being that way. Not sure this is the case with SMF though, but once again, if we are on the final stage of changing the forum software, I highly doubt that will be a priority in the next couple of years