The problem, which I think welshie was hinting at but not explaining, is the entrenched civil service. They have a vested interest in maintaining the status quo insofar as they're greatly empowered by things like the human rights act, so they will push back hard against any minister or government that attempts reform of any sort. Any newly elected government will find itself at loggerheads with the bureaucracy, which will cause delays as it tries to negotiate or find a way to work around the problem. That's the reality of the system as it stands. There's also the fact that so many laws impact so many different things and are so intertwined these days. Just repealing the human rights act would require re-writing myriad laws and regulations to account for the changes, some of which would also need repeal. The scope of the changes is immense.
This is one of the reasons Lowe's policies are getting criticised in some circles, even by people involved in their creation behind the scenes. The headline policy documents are concise by design, but there's no detailed further reading to back them up. The white papers exist, as I understand it, but they haven't been published.
I'm trying to be fair and still assuming that Lowe rushed everything out after the rape gang inquiry because he felt an urgency that hadn't existed before, or possibly for some other reason. The fact he's at least generating coherent policy proposals still puts him miles ahead of everyone else, but if we aren't seeing white papers and more detailed discussions of what's actually involved in repealing the blair-era acts within the next few months to a year, then I'll start being a lot more sceptical of the man.