I like that it is easy to use when creating an Operations Manual with this software (and others).
It's also great if you have multiple authors as there are many ways of organizing content into sections without having two different layouts side by side in one document! Some functions need more work before they're usable or useful at all - but maybe those issues will be fixed soon? We've been using OMTex since we started our project about 4 years ago now so can't recall any specific ones right off hand though some things could definitely stand improving upon such as layout customization options/features within each section type etc., But overall still not sure how much time has passed from initial release until today because its very stable product which means little change needed over these past few years either way :).