INCREDIBLE!!!
After installing the Yomi bugfix I've had nothing but smooth nonCTD action.
I was having problems with rebel-related CTD's but tht fix has really sorted it out (not sure if it was meant to happen or if it's a happy coincidence). The Yomi are now bordering my lands (akagi clan) they will know that human race still has strength.
I did have trouble with the yomi not spreading fast enough so I used th "add_money, egypt" console command to boost thir funds a bit and now they are unstoppable like a real demon army. This mods now extremely playable!!!!!YAAAAAAAAA