I don't think any subject at A Level is easy as they all require you to have good memory as the work load is huge. I do business studies and psychology. Business studies isn't too difficult but it requires you know to be able to remember a lot of things like key terms and formulas and to get good marks in the exam you don't just need to know it all, you have to be able to apply what you know to the case studies. Psychology for me was okay but there was so much to remember. I had to know 15 in depth core studies and 4 research methods.
Even if universities don't need you to have done law at A Level to do it, wouldn't it benefit you as an individual to take it and to get an hindsight into what Law is about?