Re: Prediction
If "The UK justice system tramples over the Human Rights Act" then the UK will get a good kicking in Strasbourg and prosecutions will be unsafe. But AFAIK the European Court of Human Rights has looked at disclosuree and not seen problems so far - eg holding that whether there is a breach of Article 6 has to be looked at in the context of the case as a whole.
PS
While I recognise the legal point about right to silence etc I'm not sure the example of A claiming "I did it in self-defence" but then switching to argue "I wasn't there" after seeing every piece of prosecution evidence is likely to command a great deal of public support.