Reposting ideas in easier to read format to make root's work easier:
Sepheris Secoundus -
- covertly support tyrantborn
- seemingly help the queen
- make sure queen's forces and tyranborn bleed themselves, then use queen's failure as a pretext to replace her with something more to your liking
- try not to use Malfian IG regiments, plant spies inside them
- if you get definitive proof of foul play inside Malfian IG create some conflict far away and send them there, foiling any plans by nobles to start up rebellion.
- surviving tyrantborn are to get offer to join imperial service, same way as normal humans do.
- new stuff: try to sniff out whether this and iocanthos is related somehow. If any agent provocateurs are found they are to be captured and taken in for interrogation.
Iocanthos:
- "Service guarantees citizenship".
- Form IG units, under your direct command consisting of tyrantborn.
- Make sure they are sent on dangerous missions, to thin up their ranks. Those who survive get citizenship and post far away from their original home, in some backwater - that way they will have harder time making trouble. Those who get citizenship should be treated good though, and used as propaganda tools inside tyrantborn circles.
- new stuff: The Pollen must flow. If the proposed benefits to the muties don't sway the leader to start deliveries again try to bribe him. Give him some administratum post or something like this. Also, find out who the hell he is, how he got into power and what is his backing.
- most troublesome muties can be assigned to "special" regiments that will have an "accident" in transit, killing them all.
- silence most vocal protesters to such course of action either covertly or overtly, preferring subtlety of course
- mutie psykers - if you can use them according to imperial creed then do it. If not, then according to creed suffer not the witch to live.
Lathes:
- Send agents to sniff around and get more facts. Refrain from overt actions until you know more.
- Additional thing I would do, to appease Tyrantborn - get that astropath some IG + an "experimental" unit of tyrant born. Use them as model for future Iocanthos units and maybe as a proving ground for promising muties. If all goes well you may have some good officers out of it, that can be assigned to Iocanthos later (once again, keeping them from home).
- new stuff: do not fall to chaos. While Hax is immune, others are not. If any warp-tek is found it is to be destroyed. Use it to get in favor with inquisition, while at same time trying to ferret out who are the Phaeononites. Once you know that - burn the heretics. Those fuckers are too dangerous to let them walk around.
And of course, Angry marines were just a joke as was the kawaii pic above. Please don't hate me.