Ah-ha! This is just the advice I've been looking for. I've been turtling as Casse for decades - no units but FMs, building everything I can and sitting on a vast pile of lovely mnai. I've bribed every settlement in the British Isles and remain at peace with the Eleutheroi. I got the Time of Soldiers reform by c225BC and all my MICs show 100% damage. I'm replacing those that I can with the next level and now I'll try demolishing the lvl5 ones and see what happens - although I think I can still recruit late units (i.e. Rycalawre), even though the MIC's showing 100% damage. Once that's sorted I can get on with building the most colossal and awesome war machine and conquer mainland Europe - mwah ha ha ha ha ha etc.