As far as the 'mecosystem' and IFS go, I have had a look at some resources and can say that it is definitely a coping strategy trying to handle and tie together the various reactive components within. None of these 'inner voices' are real, no matter how real they appear to the individual so there is no effective repair when trying to work with them. Short term improvements yes but once any particular implemented strategy is stopped, the status returns to the default. Same happens with drug therapy, if the drug is removed then the person returns to the default state because the cause of the problem is not being removed. What happens if you have a months break from what you are doing?
[edit] After reviewing the ideas put forward by this website's creator I no long wish to be involved with it for personal reasons.