I'm gonna start by saying I'm not trolling here lol

Heres a possibility (not saying I want this and I'm sure I'm getting threatening calls later), what about setting up a 48 hour time delay on points for posting? Easy to implement (if you needed idea how to let me know) but here's some benefits

A. reduce spam bot types: If a program is set to auto post, it may have issues determining success without points added, so may stop or reduce that activity

B. Less need for reporting upgrade due to mods having enough time to clear out posts before you get free points

C If used with the reporting upgrade instead, allows time for moderators to go thru moderated posts before points added, both B and C should reduce human spamming as they know it'll get caught (and addressed) before they can even get points.

D With a reduced count of spam (and warnings applied to members who still try) you could possibly expand the free point system for quality posts, perhaps 10 points for thread starting and a higher cap then 20 per day (this is assuming the cap was in part due to forum spamming)

This is only a possible suggestion and i'm sure there are other benefits (and possible issues) that could be taken from this, take it as you will