The problem is spero, if a chronology or court bundle is put together by the father's counsel, and a mother isn't shown this until the final hour, and she is very busy (being the primary carer, and it may school holidays, and she may also work), furthermore she may be a litigant in person, so only gets chance to challenge the bundle in court at the final hour. By this point, although she can challenge the chonology, evidence may be missing, and verbally challenging a chronology of events isn't the same as it being recorded on paper; if ever a case later returns to court, the past/inaccurate chronology will be relied on.
You are right Spero, with your experience you know that parents should absolutely check the bundles in advance, and ensure they challenge everything at court. But litigant's in persons, who are busy primary carers, and who may also be domestic violence victims and find the entire process stressful, don't always realise nor understand this.
I think there needs to be an overhaul, to ensure that LIP's are fully aware of their rights, prior to hearings. The government website for case-law and procedures is arduous and perplexing, and difficult for many parents to process.
I do think there needs to be something in place to protect LIP's being taken advantage of, because this can and does happen, and there is currently nothing in place to protect parents and children from it. So the results of hearings aren't necessarily about children's best interests, but are often the produce of advantage vs disadvantage. Sadly.