If you're working on plagiarism detection already, I'll probably work on multiple account detection first. Granted, multiple bots running from different developers with different sets of algorithms probably isn't a bad idea (will make it harder for bots to avoid)
I think we can certainly run multiple attacks on plagiarism as long as we coordinate to reduce overlap in which users we've reported etc, e.g. using the thread I mentioned and also
https://bpip.org to check for bans.
With the little time I have available I'm still probably weeks away from a reasonably usable product and even then it would cover only a relatively small set of potential plagiarism. LoyceV mentioned that forum gets ~50k posts a day - many of which can be ignored or whitelisted but still that's a lot of garbage to sift through.